Panasonic FP3 User manual

Technical

Manual

FP3/FP10S THERMOCOUPLE INPUT UNIT Technical Manual

ACG-M0072-1 '96.3

FP3/FP10S

THERMOCOUPLE INPUT UNIT

PROGRAMMABLE CONTROLLER

Safety Precautions

Observe the following notices to ensure personal safety or to prevent accidents.

To ensure that you use this product correctly, read this User’s Manual thoroughly before use.

Make sure that you fully understand the product and information on safe.

This manual uses two safety flags to indicate different levels of danger.

WARNING

If critical situations that could lead to user’s death or serious injury is assumed by mishandling of the

product.

-Always take precautions to ensure the overall safety of your system, so that the whole

system remains safe in the event of failure of this product or other external factor.

-Do not use this product in areas with inflammable gas. It could lead to an explosion.

-Exposing this product to excessive heat or open flames could cause damage to the lithium

battery or other electronic parts.

CAUTION

If critical situations that could lead to user’s injury or only property damage is assumed by mishandling

of the product.

-To prevent abnormal exothermic heat or smoke generation, use this product at the values less

than the maximum of the characteristics and performance that are assure in these specifications.

-Do not dismantle or remodel the product. It could lead to abnormal exothermic heat or

smoke generation.

-Do not touch the terminal while turning on electricity. It could lead to an electric shock..

-Use the external devices to function the emergency stop and interlock circuit.

-Connect the wires or connectors securely.

The loose connection might cause abnormal exothermic heat or smoke generation

-Do not allow foreign matters such as liquid, flammable materials, metals to go into the

inside of the product. It might cause exothermic heat or smoke generation.

-Do not undertake construction (such as connection and disconnection) while the power

supply is on.

-This manual and its contents are copylighted.

-You may not copy this manual,in whole or part,without written consent of Matsushita Electric

Works,Ltd.

-Windows and Windows NT are registered trademarks of Microsoft Corporation in the

United States and/or other countries.

-All other company names and product names are trademarks or registered

trademarks of their respective owners.

-Matsushita Electric Works,Ltd. pursues a policy of continuous improvement of the

Design and performance of its products, therefore,we reserve the right to change the manual/

product without notice.

Preface

1. Thermocouple Input Unit: AFP3420

This manual explains the thermocouple input unit with 4-channel input possibility. The unit can convert the data

from a K or J type thermocouple sensor into digital values for processing them in an FP3 or FP10S in the following

specifications:

- K type: 0 °C to 200 °C/32 °F to 392 °F,

0°C to 400 °C/32 °F to 752 °F,

0°C to 600 °C/32 °F to 1112 °For

0°C to 1000 °C/32 °F to 1832 °F range

- J type: 0 °C to 200 °C/32 °F to 392 °F,

0°C to 400 °C/32 °F to 752 °For

0°C to 600 °C/32 °F to 1112 °F range

Note:

SBe sure to use a J or K type thermocouple sensor which conforms to DIN standards.

2. Composition of the Manual

The THERMOCOUPLE INPUT UNIT Technical Manual is composed of the following chapters:

- 1. FEATURES:

The features and basics about the units are explained.

- 2. SPECIFICATIONS:

The specifications for the thermocouple input unit are given.

- 3. INSTALLATION AND SETTINGS:

The unit installation, settings and wiring descriptions are given.

- 4. PROGRAMMING FOR THERMOCOUPLE INPUT UNITS:

Key knowledge about programming for the thermocouple input unit is given.

- 5. TROUBLESHOOTING:

Steps to take when an error occurs are given.

- 6. APPENDIX:

Major data and explanations for using the thermocouple input unit are given for your reference.

CONTENTS

CHAPTER 1: FEATURES

1-1. Features and Functions 2.............................................

1-2. Limitations on Configurations 3........................................

1. Limitations on Unit Installation Position 3.............................

2. Limitations on Unit Current Consumption 3............................

1-3. I/O Allocation and Slot Position 4......................................

1. I/O Allocation 4..................................................

2. Slot Position 4...................................................

CHAPTER 2: SPECIFICATIONS

2-1. Parts Terminology and Functions 8.....................................

2-2. Specifications 10...................................................

1. General Specifications 10..........................................

2. Performance Specifications 10......................................

3. Data Conversion Characteristics 11...................................

2-3. Shared Memory Specifications 13......................................

2-4. Dimensions 15.....................................................

CHAPTER 3: INSTALLATION AND SETTINGS

3-1. Installing a Thermocouple Input Unit 18.................................

1. Basic Configurations 18............................................

2. How to Install a Thermocouple Input Unit 19...........................

3. Installation Environment 20.........................................

3-2. Settings 22........................................................

1. Temperature Range Settings 22......................................

2. Channel Enable Settings 23.........................................

3-3. Wiring 24.........................................................

CHAPTER 4: PROGRAMMING FOR THERMOCOUPLE

INPUT UNIT

4-1. The Basics of Programming 28........................................

4-2. Reading Normalized Data 32..........................................

4-3. Reading Celsius Data 33.............................................

4-4. Reading Averaged Value 34...........................................

4-5. Setting Offset for Celsius Data 36......................................

4-6. Monitoring Unit’s Self-diagnostic Error Flag 37...........................

CHAPTER 5: TROUBLESHOOTING

5-1. Check Points for Troubleshooting 40....................................

5-2. Troubleshooting 41..................................................

5-3. Total-check Error Codes 47...........................................

5-4. Self-diagnostic Error Codes 48........................................

CONTENTS

CHAPTER 6: APPENDIX

6-1. Shared Memory Specifications 54......................................

6-2. Instructions for Accessing Shared Memory 56............................

6-3. Terminology 68....................................................

INDEX 79................................................................................

RECORD OF CHANGES 81.................................................................

CHAPTER 1 FEATURES

1-1. Features and Functions 2.............................

1-2. Limitations on Configurations 3........................

1. Limitations on Unit Installation Position 3.............

2. Limitations on Unit Current Consumption 3............

1-3. I/O Allocation and Slot Position 4......................

1. I/O Allocation 4..................................

2. Slot Position 4...................................

1-1. Features and Functions

Thermocouple sensor

K type

J type

Thermocouple input unit

(AFP3420)

Analog input

(4 channels per unit)

•Thermocouple input unit for FP3/FP10S

This unit converts temperature data from a thermocouple sensor into digital values for processing by an FP3 or

FP10S CPU.

•Supports K and J type thermocouples

Temperature sensors which may be used are the K and J types.

•Automatic zero point correction

With the zero point correction sensor, the measured value of thermocouple sensor is automatically converted to

Celsius. Therefore, no complex calculation is required for handling data in an FP3 or FP10S.

•Four selections for temperature measurement range

The following selections are available for the measurement range:

-0°C to 200 °C/32 °F to 392 °F (with a K or J type)

-0°C to 400 °C/32 °F to 752 °F (with a K or J type)

-0°C to 600 °C/32 °F to 1,112 °F (with a K or J type)

-0°C to 1000 °C/32 °F to 1,832 °F (with a K type)

•Two data styles available

In addition to converting the temperature data in normalized 0 to 4000 form, the unit can also express the data in

digital Celsius data. (The Celsius data is expressed up to the 0.1 degree accuracy by multiplying 10 and the Celsius

value together.)

•Offset settings possible for Celsius data

An offset value can be set to correct the Celsius data when the data given differs from those of other measuring

instruments due to measurement error.

•Averaging function available for regular and Celsius data

The unit also has function for averaging normalized and Celsius data. This enables an FP3 or FP10S to handle

unstable data.

•Easy-to-use self-diagnostic functions

The unit can detect the disconnection or the broke of thermocouple sensor and temperature range abnormality.

•Shared memory based communication between an FP3/FP10S CPU and a thermocouple input unit

Data exchanges between the FP3/FP10S CPU and a thermocouple input unit can be performed using the shared

memory of the unit. By executing the F150 (READ)/P150 (PREAD) and F151 (WRT)/P151 (PWRT), CPU can

read various digital data, such as normalized, Celsius and their averaging data, its self-diagnostic condition etc. and

can write offset enable flags and offset values.

1-2. Limitations on Configurations

1. Limitations on Unit Installation Position

There are no limitations on the installation position when the thermocouple input unit is used on the basic system

(master backplane with a CPU), on the expansion system (expansion backplane) or on a MEWNET-F (remote I/O)

slave unit system.

Can be installed in any position. Can be installed in any position.

Basic system Expansion system

Can be used on a MEWNET-F (remote I/O) slave station.

MEWNET-F slave unit system

2. Limitations on Unit Current Consumption

There is limitation current consumption when configuring the FP3 and FP10S systems.

The 5 V power for unit operation is supplied from a power supply unit on the backplane and the total power

consumption of all installed units must be less than the power supply unit capacity.

The current consumption for thermocouple input unit is 500 mA at 5 V DC.

Be sure to verify that the capacity of the power supply unit of the backplane is sufficient for controlling units

installed.

Power Supply Unit Rated output current (5 V)

AFP3631

AFP3636

AFP3634

2.4 A

The internal power supply (5 V) goes

to each unit via the backplane bus.

Note:

SFor details about the limitations on the current consumption, refer to “FP3/FP10S HARDWARE Technical

Manual.”

1-3. I/O Allocation and Slot Position

1. I/O Allocation

SI/O addresses for each unit can be allocated according to the type of units and its location in one of the following

two methods:

- Automatic I/O allocation

SI/O addresses are automatically allocated according to the type of units and its location each time power is supplied

to the system.

SWith this I/O allocation method, sixteen points (16SX) are occupied for each thermocouple input unit.

- Arbitrary I/O allocation

SI/O addresses can be freely allocated using the NPST-GR Software.

SEven with this I/O allocation method, sixteen points (16SX) must be allocated for each thermocouple input unit in

the same way as automatic I/O allocation.

100

10F

110

14F

Thermocouple input unit

Note:

SFor details about the automatic and arbitrary I/O allocation methods, refer to the “FP3/FP10S HARDWARE

Technical Manual.”

2. Slot Position

SFor programming for the thermocouple input unit control, the unit position (slot number) is required as:

R9010 F150 READ, K3, K0, K4, DT100

Slot number Transfer

destination

Read word number

Starting address for the

shared memory read

R10 P151 WRT, K3, DT200, K4, K61

Slot number

Set data storage location

Number of data written

Starting shared memory address

Program examples

Note:

SIf a thermocouple input unit is installed on a MEWNET-F (remote I/O) slave station, the F152 (RMRD)/P152

(PRMRD) and F153 (RMWT)/P153 (PRMWT) instructions are used specifying the slot position of the

MEWNET-F slave station.

For details about the instructions, refer to page 56, “6-2. Instructions for Accessing Shared Memory.”

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