Rockwell Automation Samsung NX70 User manual

NX70/NX700 Serial Communications Unit (SCU)

User Manual

www.DataSheet4U.com

( DataSheet : www.DataSheet4U.com )

Important User Information

Solid state equipment has operational characteristics differing from those of

electromechanical equipment. Because of these differences, and also because of the

wide variety of uses for solid state equipment, all persons responsible for applying

this equipment must satisfy themselves that each intended application of this

equipment is acceptable.

In no event will Rockwell Samsung Automation be responsible or liable for indirect or

consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative

purposes. Because of the many variables and requirements associated with any

particular installation, Rockwell Samsung Automation cannot assume responsibility

or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Samsung Automation. with respect to use

of information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written

permission of Rockwell Samsung Automation. is prohibited.

Throughout this manual we use notes to make you aware of safety considerations.

WARNING Identifies information about practices or circumstances which may

lead to serious personal injury or death, property damage, or

economic loss.

IMPORTANT Identifies information that is critical for successful application and

understanding of the product.

ATTENTION Identifies information about practices or circumstances that can lead

to minor personal injury, property damage, economic loss, or

product malfunction. However, depending on circumstances, failure

to follow the directions accompanying this symbol may also lead to

serious consequences.

Contents

1. Specifications and Components ................................. 9

SCU Features .................................................................................................. 9

System Configuration................................................................................... 10

Specifications ................................................................................................ 11

Unit Diagram ................................................................................................. 12

Operation Status Display and Functions .................................................... 13

DIP Switch Settings ...................................................................................... 14

2. Wiring........................................................................ 17

Wiring ............................................................................................................ 17

3. Operations and Programming Examples................... 19

Basic Operations ........................................................................................... 19

Precautions for SCU Operation ................................................................... 20

Programming ................................................................................................ 22

NX70, NX700 PLC Installation Example...................................................... 33

PLC Programming Examples....................................................................... 34

Troubleshooting............................................................................................ 47

4. Product Dimensions and Installation........................ 51

NX700 PLC Product Dimensions ................................................................. 51

NX70 PLC Product Dimensions ................................................................... 53

Power Unit Dimensions(mm) ...................................................................... 54

Safety Instructions

Please read this manual and the related documentation thoroughly

and familiarize yourself with product information, safety instructions

and other directions before installing, operating, performing

inspection and preventive maintenance. Make sure to follow the

directions correctly to ensure normal operation of the product and

your safety. Otherwise it may cause overheating and product

WARNING • If this product is used in a situation that may cause

personal injury and/or significant product damage,

implement safe measures such as use of fault-safe

equipment.

• Do not use this product under any conditions exposed

to explosive gases. It may cause an explosion.

ATTENTION • Make sure to use an external device when configuring

the protective circuit breakers for emergencies or

interlock circuits.

• Fasten the terminal screws tightly to ensure that the

cable connection is secure. Incorrect cable connection

may cause overheating and product malfunction.

• Operate and keep the product under the allowed

conditions directed in product specifications.

Otherwise it may cause overheating and product

malfunction.

• Do not disassemble or remodel the product.

Otherwise it may cause an electric shock or

malfunction.

• Do not touch the terminals when the power is on.

Otherwise it may cause an electric shock.

Installation Environment for SCU (Serial

Communication Unit)

ATTENTION Do not install your analog conversion modules if any of

the following conditions are present:

• Ambient temperature outside the range of 0 to 55 °C

(32 to 131 °F).

• Direct sunlight.

• Humidity outside the range of 30% to 85% (Non-

condensing).

• Chemicals that may affect electronic parts.

• Excessive or conductive dust, or salinity.

• High voltage, strong magnetic fields, or strong

electromagnetic influences.

• Direct impact and excessive vibration.

ATTENTION Installing the SCU Module on the System

1. Connect a communication cable to the SCU module.

2. Turn on the power to the external device connected

to the SCU module.

3. Turn on the main PLC power.

ATTENTION Removing the SCU Module from the System

1. Turn off the main PLC power.

2. Turn off the power to the external device connected

to the SCU module.

3. Remove the communication cable.

ATTENTION Preventing SCU Module Malfunctions

• Be sure to power off the PLC system before installing

or removing an SCU module.

• Ensure that the SCU module is secured onto the

backplane before operating it.

• Be cautious of metal chips when wiring for the SCU

module. Metal chips and debris that fall into the

module can cause damage.

• Do not touch with your hand the connector on the

bottom of the module which is used to connect to the

backplane . Otherwise, it can cause connection fault

and static electrical discharges.

• Do not drop or impose impact to the SCU module. It

can cause damage because the housing is made of

injection-molded plastics.

ATTENTION Preventing PLC System Malfunctions

• Use an isolation transformer and line filter on the

incoming power to the PLC when there is equipment

using or producing high current, high voltage, or

large magnetic fields in the vicinity.

• Use analog sensor that meets the rated specifications

for module connection. Otherwise,

it may cause operation errors.

• Separate the main PLC power line ground from all

other power grounds. Always use class 3 grounding.

• Do not exceed the current and power rating of the

external 24 VDC provided by the PLC power supply.

• Avoid system faults due to programming errors by

reading and fully understanding this system manual

and the PLC instruction set.

• Perform regular preventive maintenance on installed

systems, checking devices and wiring for potential

breakdowns and failures.

Specifications and Components

Exchange data with RS232C or RS485 communication devices, such as

barcode reader (RS232C) and network inverter (RS458). ASCII and HEX

(Binary) data transfer is enabled with ladder program. (SCU unit = the

existing features of SDU unit + 485 communication)

SCU Features

1. Two channels are implemented on a single unit (RS232C, RS485

selectable).

2. Data input/output with simple sequence instructions.

Use PLC advanced instruction READ to read data from the SCU, and

WRITE to write data to the SCU. CPU unit and SCU will handle the

task with shared memory, so there is no need for writing

complicated programs.

3. SCU unit is equipped with RS-485 network feature, added to the

existing N-series SDU module features, expanding its scope of

usage.

4. RS232C or RS485 communication network is available.

Data input/output with RS232 devices:

Connect to and exchange data with devices like IDX display,

measurement instrument, barcode reader, and printer. Data input/

output with RS485 devices:

Connect through network to temperature controller, network

inverter, and network servo.

5. Unlimited mounting in PLC slots, 500 byte transmission capability.

NX70 PCL SCU Unit

(NX70-SCU)

NX700 PCL SCU Unit

(NX-SCU)

Read data with the advanced instruction, READ

Write data with the advanced instruction,

6. Both ASCII and HEX (binary) can be used as transmission code.

7. End code can be configured freely with PLC ladder instructions.

System Configuration

Using RS232C Communication

Using RS485C Communication

You can connect RS232C device/RS485 network device to each

RS232C/RS485 (CH1, CH2) channel.

NX series SCU can be mounted anywhere you want regardless of

whether the backplane is base or expansion. The number of SCU

mounting is not limited.

In addition to this Manual, please refer to System Manual and Programming

Manual for the PLC when using SCU.

NOTE

Barcode Reader

ID Card

Printer

Measurement

instrument

RS-232C Cable

RS-485 communication

Inverter

network

RS-485 communication

Temperature

controller network

This manual suits for next models

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