Western Reserve Controls W5-JDC4 User manual

W5-JDC4

Revision 1.02

4-Channel DeviceNet Serial

Gateway

User’s Manual

Western Reserve Controls

Western Reserve Controls W5-JDC4 User’s Manual

Revision 1.02

Although every effort has been made to insure the accuracy of this document, all information is subject

to change without notice. Western Reserve Controls Inc. assumes no liability for any errors or

omissions in this document or for direct, indirect, incidental or consequential damage resulting from the

use of this document.

Document PUB 32.0

Rev 1.02

March 2003

Western Reserve Controls

1485 Exeter Rd.

Akron, Ohio 44306

http://www.wrcakron.com

DeviceNet is a trademark of the Open DeviceNet Vendor Association (“ODVA”).

All other trademarks are property of their respective companies.

Western Reserve Controls W5-JDC4 User’s Manual

Revision 1.02

TABLE OF CONTENTS

1 OVERVIEW...................................................................................................................................................................................1

1.1 FEATURES.................................................................................................................................................................................2

1.2 TYPICAL APPLICATIONS.......................................................................................................................................................3

1.3 BASIC OPERATION...................................................................................................................................................................3

1.3.1 Polled I/O..........................................................................................................................................................................3

1.3.2 Cyclic Input Message.....................................................................................................................................................3

1.3.3 Change-of-State, or C.O.S.............................................................................................................................................4

1.3.4 Explicit Messages............................................................................................................................................................4

1.4 MAJOR OPTION SELECTIONS................................................................................................................................................4

1.4.1 Maximum Transmit and Receive Characters Parameters........................................................................................4

1.4.2 Master-Slave Handshake vs. Immediate Option........................................................................................................4

2 QUICK START.............................................................................................................................................................................5

2.1 HOW TO INSTALL AND ESTABLISH DEVICENET COMMUNICATIONS............................................................................5

2.2 DEFAULT SETTINGS................................................................................................................................................................6

2.3 HOW TO INSTALL A SERIAL NETWORK..............................................................................................................................7

2.4 HOW TO READ SERIAL DEVICE DATA FROM THE W5-JDC4..........................................................................................7

2.4.1 Example Assembly for Serial Receive..........................................................................................................................8

2.4.2 The Receive Max Character Length............................................................................................................................8

2.5 HOW TO WRITE SERIAL OUTPUT DATA TO THE W5-JDC4..........................................................................................9

2.5.1 Example Assembly for Serial Transmit........................................................................................................................9

2.5.2 The Transmit Max Character Length..........................................................................................................................9

3 GENERAL SPECIFICATIONS ................................................................................................................................................10

4 HARDWARE INSTALLATION AND SET-UP.....................................................................................................................12

4.1 OVERVIEW...............................................................................................................................................................................12

4.2 LED OPERATION....................................................................................................................................................................13

4.2.1 DeviceNet LEDs.............................................................................................................................................................13

4.2.2 Serial Port LEDs............................................................................................................................................................14

4.3 SERIAL PORT CONNECTOR..................................................................................................................................................14

4.4 ROTARY SWITCHES...............................................................................................................................................................15

4.5 DEVICENET CONFIGURATION.............................................................................................................................................15

4.5.1 Network Termination...................................................................................................................................................16

4.5.2 DeviceNet Connection Wiring....................................................................................................................................16

5 SOFTWARE CONFIGURATION AND SET-UP ..................................................................................................................18

5.1 DEVICE PARAMETERS...........................................................................................................................................................18

5.2 SETTING UP THE SERIAL LINK...........................................................................................................................................18

5.3 RECEIVING SERIAL DATA FROM THE ASCII DEVICE......................................................................................................18

5.3.1 Overview.........................................................................................................................................................................18

5.3.2 Setting up the Receive Character Buffer Length.....................................................................................................18

5.3.3 Setting up and Using Pad Mode................................................................................................................................19

5.3.4 Setting Up and Using the Swap Bytes Mode............................................................................................................20

5.3.5 Setting Up and Using Delimiter Operation..............................................................................................................21

5.3.6 Receive String Data Type............................................................................................................................................21

5.3.7 Setting Up the Scanner I/O Receive Size..................................................................................................................22

5.3.8 Explicit Messages to Receive the Serial Data String.............................................................................................22

5.3.9 Status Byte Description................................................................................................................................................22

5.4 TRANSMITTING SERIAL DATA TO THE ASCII DEVICE..................................................................................................25

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iii

5.4.1 Overview.........................................................................................................................................................................25

5.4.2 Setting up the Transmit Character Buffer Length...................................................................................................25

5.4.3 Setting Up and Using the Transmit Delimiter..........................................................................................................25

5.4.4 Setting up and using the TX Byte Swap Mode.........................................................................................................25

5.4.5 Transmitting from the Master to the W5-JDC4........................................................................................................26

5.4.6 Transmit String Data Type..........................................................................................................................................26

5.4.7 Transmitting Serial Data.............................................................................................................................................26

5.4.8 Setting Up the Scanner I/O Transmit Size................................................................................................................26

5.4.9 Master-Slave Handshake vs. Immediate Mode........................................................................................................27

5.4.10 Explicit Messages to Transmit Serial Data String...............................................................................................28

5.5 SETTING UP DEVICENET COMMUNICATIONS..................................................................................................................28

5.5.1 Polled I/O........................................................................................................................................................................28

5.5.2 Cyclic and Change-of-State I/O.................................................................................................................................28

5.5.3 Setting up the DeviceNet I/O Connections...............................................................................................................29

5.5.4 Setting up the Connection Timer (EPR)...................................................................................................................29

5.5.5 Setting up the DeviceNet Baudrate...........................................................................................................................29

6 ASSEMBLY OBJECT FORMATS .........................................................................................................................................30

6.1 SHORT STRING DATA TYPE ASSEMBLIES.........................................................................................................................30

6.1.1 Immediate Mode............................................................................................................................................................30

6.1.2 Handshake Mode..........................................................................................................................................................30

6.2 ARRAY (DATA BLOCK) DATA TYPE ASSEMBLIES..........................................................................................................31

6.2.1 Immediate Mode............................................................................................................................................................31

6.2.2 Handshake Mode..........................................................................................................................................................31

6.3 STRING DATA TYPE ASSEMBLIES......................................................................................................................................31

6.3.1 Immediate Mode............................................................................................................................................................31

6.3.2 Handshake Mode..........................................................................................................................................................31

7 THEORY OF OPERATION......................................................................................................................................................33

7.1 THE TRANSMIT RECORD ALGORITHM..............................................................................................................................33

7.1.1 Basic Theory of operation...........................................................................................................................................33

7.2 THE RECEIVE RECORD ALGORITHM..................................................................................................................................33

7.2.1 Basic Theory of operation...........................................................................................................................................33

8 DEVICENET PROFILE, OBJECTS AND SERVICES .........................................................................................................36

8.1 W5-JDC4 DEVICENET PROFILE..........................................................................................................................................36

8.2 IDENTITY OBJECT (CLASS 1)...............................................................................................................................................37

8.3 DEVICENET OBJECT (CLASS 3)............................................................................................................................................38

8.4 ASSEMBLY OBJECT (CLASS 4)..............................................................................................................................................40

8.4.1 Instance 101 (Consume) Assembly Object Description.........................................................................................40

8.4.2 Instance 102 (Produce) Assembly Object Description...........................................................................................41

8.4.3 Disabling channels.......................................................................................................................................................41

8.5 CONNECTION (CLASS 5) OBJECT ........................................................................................................................................42

8.6 ACKNOWLEDGE (CLASS 43) OBJECT ..................................................................................................................................42

8.7 SERIAL PORT OBJECT CLASS 112 (70HEX)...........................................................................................................................42

8.7.1 Serial Port Class Attributes........................................................................................................................................42

8.7.2 Serial Port Class Services...........................................................................................................................................42

8.7.3 Serial Port Instance Attributes...................................................................................................................................42

8.7.4 Instance Services...........................................................................................................................................................44

8.8 TRANSMIT RECORD OBJECT CLASS 113 (71HEX)................................................................................................................44

8.8.1 Transmit Record Object Class Attributes..................................................................................................................44

8.8.2 Transmit Record Object Class Services.....................................................................................................................44

8.8.3 Transmit Record Object Instance Attributes............................................................................................................45

Western Reserve Controls W5-JDC4 User’s Manual

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8.8.4 Transmit Record Object Instance Services...............................................................................................................47

8.9 RECEIVE RECORD OBJECT CLASS 114 (72HEX)....................................................................................................................47

8.9.1 Receive Record Object Class Attributes....................................................................................................................47

8.9.2 Receive Record Object Class Services.......................................................................................................................47

8.9.3 Receive Record Object Instance Attributes..............................................................................................................47

8.9.4 Receive Record Object Instance Services.................................................................................................................51

8.10 COMMON DEVICENET SERVICES......................................................................................................................................51

TABLE OF FIGURES

FIGURE 1-1 W5-JDC4........................................................................................................................................................................1

FIGURE 4-1 W5-JDC4 OUTLINE DRAWING –TOP VIEW..........................................................................................................12

FIGURE 4-2 W5-JDC4 OUTLINE DRAWING –RIGHT SIDE VIEW............................................................................................13

FIGURE 4-3 DEVICENET CONNECTORS........................................................................................................................................17

FIGURE 5-1 RECEIVE ARRAY DATA FORMAT............................................................................................................................22

FIGURE 5-2 RECEIVE SHORT_STRING DATA FORMAT.............................................................................................................22

FIGURE 5-3 RECEIVE STRING DATA FORMAT............................................................................................................................22

FIGURE 7-1 TRANSMIT RECORD ALGORITHM FUNCTIONAL FLOWCHART..........................................................................33

FIGURE 7-2 RECEIVE RECORD ALGORITHM FUNCTIONAL FLOWCHART .............................................................................34

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LIST OF TABLES

TABLE 1-1 I/O MESSAGE TYPES......................................................................................................................................................3

TABLE 2-1 INSTANCES OF THE SERIAL CHANNELS.....................................................................................................................5

TABLE 2-2 DEFAULT INPUT (SERIAL RECEIVE) ASSEMBLY FORMAT ....................................................................................8

TABLE 2-3 DEFAULT OUTPUT (SERIAL TRANSMIT) ASSEMBLY FORMAT ............................................................................9

TABLE 4-1 MODULE STATUS LED (LABELED MS)...................................................................................................................13

TABLE 4-2 NETWORK STATUS LED (LABELED NS).................................................................................................................14

TABLE 4-3 RS232 CONNECTOR SIGNALS.....................................................................................................................................14

TABLE 4-4 BAUD RATE SWITCH (RATE) ...................................................................................................................................15

TABLE 4-5 DEVICENET ADDRESS SWITCHES.............................................................................................................................15

TABLE 4-6 MAXIMUM NETWORK CABLE LENGTHS.................................................................................................................16

TABLE 5-1 SERIAL STATUS BYTE................................................................................................................................................23

TABLE 5-2 W5-JDC4 CONSUME ASSEMBLY OBJECT WITH HANDSHAKE MODE................................................................27

TABLE 6-1 IMMEDIATE MODE CONSUME SHORT STRING......................................................................................................30

TABLE 6-2 IMMEDIATE MODE PRODUCE SHORT STRING.......................................................................................................30

TABLE 6-3 HANDSHAKE MODE CONSUME SHORT STRING.....................................................................................................30

TABLE 6-4 HANDSHAKE MODE PRODUCE SHORT STRING......................................................................................................30

TABLE 6-5 IMMEDIATE MODE CONSUME DATA BLOCK.........................................................................................................31

TABLE 6-6 IMMEDIATE MODE PRODUCE DATA BLOCK..........................................................................................................31

TABLE 6-7 HANDSHAKE MODE CONSUME DATA BLOCK........................................................................................................31

TABLE 6-8 HANDSHAKE MODE PRODUCE DATA BLOCK.........................................................................................................31

TABLE 6-9 IMMEDIATE MODE CONSUME STRING....................................................................................................................31

TABLE 6-10 IMMEDIATE MODE PRODUCE STRING..................................................................................................................31

TABLE 6-11 HANDSHAKE MODE CONSUME STRING.................................................................................................................31

TABLE 6-12 HANDSHAKE MODE PRODUCE STRING.................................................................................................................32

TABLE 8-1 DEVICENET OBJECTS..................................................................................................................................................36

TABLE 8-2 IDENTITY OBJECT CLASS ATTRIBUTES (INSTANCE 0).........................................................................................37

TABLE 8-3 IDENTITY OBJECT INSTANCE ATTRIBUTES (INSTANCE 1).................................................................................37

TABLE 8-4 IDENTITY OBJECT COMMON SERVICES..................................................................................................................38

TABLE 8-5 CLASS 3 CLASS ATTRIBUTES....................................................................................................................................38

TABLE 8-6 CLASS 3 INSTANCE ATTRIBUTES.............................................................................................................................39

TABLE 8-7 INSTANCE 101 CONSUME DATA (ASCII TRANSMIT STRING)..............................................................................40

TABLE 8-8 INSTANCE 102 PRODUCE DATA (ASCII RECEIVE STRING)..................................................................................41

TABLE 8-9 CHANNEL 2 DISABLED................................................................................................................................................41

TABLE 8-10 CLASS 112 (70HEX) SERIAL PORT OBJECT INSTANCE ATTRIBUTES...................................................................42

TABLE 8-11 CLASS 113 (71HEX) TRANSMIT RECORD OBJECT INSTANCE ATTRIBUTES.......................................................45

TABLE 8-12 CLASS 114 (72HEX) RECEIVE RECORD OBJECT INSTANCE ATTRIBUTES...........................................................47

Western Reserve Controls W5-JDC4 User’s Manual

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1Overview

The W5-JDC4 is a panel-mounted DeviceNet-to-serial link communications gateway that provides a

flexible DeviceNet interface to as many as four different channels of ASCII devices. A wide variety of

serial ASCII devices can be easily connected, with independent setups for each channel.

The W5-JDC4 does not interpret the data being transmitted across it, and so the transferred

messages may contain data of any nature or definition. This allows you to use the same gateway

for many different serial protocols.

Using the W5-JDC4 you may communicate with the connected peripheral devices in the same

fashion as the other DeviceNet products in the system. Data may be read/written using either I/O or

explicit messaging. Typically real-time data is read and written as I/O by the DeviceNet Master via

Polled, Change-of-State or Cyclic I/O and parameters are read and written with the Explicit

Messaging technique. However, you may also read and write serial data via explicit messages.

To read and write the serial ASCII devices connected to the serial ports, you read and/or write to all

4 channels simultaneously. You can use either an I/O Message or Explicit Message.

The W5-JDC4 is defined as a Communications Adapter device on the DeviceNet system. It has four

9-pin D-sub connectors for connection to the RS232 interface port on your devices and two 5-pin

“micro” connectors for connections to the DeviceNet network. The W5-JDC4 has one assigned

DeviceNet address, which is set by two 10-position rotary switches on the unit. There is also one

rotary switch for the DeviceNet baud rate. Other W5-JDC4 parameters are software-configurable.

Each W5-JDC4 has 2 standard green/red DeviceNet LED’s for module status and network status

and two green LED’s for each serial port to indicate RS232 transmit and receive activity.

Figure 1-1W5-JDC4

Western Reserve Controls W5-JDC4 User’s Manual

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1.1 Features

The W5-JDC4 has the following features:

•Translates messages and data between DeviceNet and a serial peripheral device

•Up to 4 serial devices can be connected simultaneously

•ODVA Group 2 Only Slave

•ODVA Conformance tested to DeviceNet Spec 2.0

•Defined as a DeviceNet Communications Device Profile 12 (Chex)

•Autobaud operation

•I/O Messaging of Serial Data

•Poll

•COS

•Cyclic

•Explicit Messaging

•Serial data

•Configuration data

•Pad mode option

•Byte swapping option

•Master-Slave handshake option

•Individual software configurable parameters for each serial port

•DeviceNet address and baud rate selection via DIP switches

•Panel mount

•2 micro DeviceNet connectors –1 male and 1 female

•4 DB9 RS-232 Connectors –male (DTE)

•2 standard DeviceNet module and network status LED’s

•8 serial transmit and receive LED’s

•Powered from DeviceNet 11-25 Vdc network power

•ASCII string length up to 128 bytes

•Serial port baud rate up to 115.2k baud

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1.2 Typical Applications

•Weigh scales

•Bar code readers and scanners

•Display panels

•Robots

•Drives

•Motion controllers

•Operator stations / HMI

•Magnetic code readers

1.3 Basic Operation

The W5-JDC4 operates as the DeviceNet front-end to the serial device(s). The DeviceNet Master

can receive and send data to and from the W5-JDC4 via the methods described in this section. It

sends the data to the device and likewise accepts responses from the device, which are passed

back to the DeviceNet system as required.

The W5-JDC4 has one DeviceNet address (MacID). All DeviceNet messages to the W5-JDC4 itself

(to read / write its internal data) are sent to this address. DeviceNet messages to and from the

serial device can be sent to the W5-JDC4 DeviceNet assembly objects using either I/O or explicit

messaging.This allows you to define the specific operation of each W5-JDC4. These objects include

all the set-up required for the serial communications link.

The following chart and section defines the various messaging methods used for “typical” data types

at your serial device and a brief explanation follows.

Table 1-1I/O Message Types

Typical Data Polled Cyclic Bit-Strobe Change-of-State Explicit Message

Commands √√ √√ √√ √√

Status √√ √√ √√ √√

Parameters √√

1.3.1 Polled I/O

The DeviceNet Master uses the W5-JDC4’s predefined polled IO connection to send serial input and

output data to the W5-JDC4. When a poll is received and the record has changed since the last

poll was sent, the W5-JDC4 sends the associated transmit data out the serial port to the remote

ASCII device. When the W5-JDC4 receives serial data from a device on the serial link, the poll

response data to the Master contains up to 50 bytes of received data.

1.3.2 Cyclic Input Message

Cyclic I/O is the function by which a slave device sends its input data to the master at a specific

Western Reserve Controls W5-JDC4 User’s Manual

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time period without the host explicitly requesting it. When the specified time interval (defined by

you) elapses, the most recent input data from the serial port are transmitted to the master. This

data is the same format as a poll response.

1.3.3 Change-of-State, or C.O.S.

C.O.S. I/O is the function by which a slave device sends its input data to the master when defined

input data changes without the host explicitly requesting it. In the case of the W5-JDC4, this occurs

when the delimiter character is asynchronously received from the serial device, when the defined

number of characters is received or when the internal buffer is filled. This data is the same format as

a poll response.

1.3.4 Explicit Messages

Explicit messages are typically used to read and write configuration data. This data allows the W5-

JDC4 to change its internal operating parameters such as baudrate and parity. In addition the user

can use explicit messages to read and write the serial port data.

1.4 Major Option Selections

The W5-JDC4 has several different operating modes. Some of these are available only in certain

combinations. These option selections are described here briefly and in more detail later.

1.4.1 Maximum Transmit and Receive Characters Parameters

These parameters are both defaulted from the factory to 20 for each channel. For any channel,

setting both parameters to zero will cause the W5-JDC4 to fully eliminate the channel’s header and

data from the consume and produce assembly. See Section 8.4.3 for details.

1.4.2 Master-Slave Handshake vs. Immediate Option

If DeviceNet Master-Slave Handshake Mode is selected, the DeviceNet Master can inhibit the W5-

JDC4 from sending new ASCII data until the Master is ready to receive and process the new data.

This option is used only with a Poll I/O or Explicit Message.

The W5-JDC4 will indicate to the Master that new data is available by setting the New Data Flag in

the Status byte of the Produce message. When the Master is ready to receive new serial data, it

sets a new number in the new record number byte of the next poll command message. Note that

this applies only to data being sent from the W5-JDC4 to the Master.

In Immediate Mode this handshaking is not active and the W5-JDC4 sends new data as soon as it

is received from the ASCII device. (Default.) See Section 5.4.9 for details.

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