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Thermocouple Wire Guide

D-1

SIMATIC 505–2556 Installation and Operation Guide

Appendix D

Thermocouple

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Thermocouple

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Table of Contents

Default Chapter5
- Table of Contents5
Preface10
Chapter 1 Description12
Front Panel Description13
- Active LED13
- Input Terminals for Channels13
- SIMATIC 505-2556 Front Panel Description13
Operation and Configuration14
- Asynchronous Operation14
- Immediate I/O Compatibility14
- J, K, R, S, T, E, or L Thermocouples14
- Digital Word Map14
- Word Input to the PLC from the Module14
Thermocouple Input to Digital Conversion15
- Engineering Units15
- Scale Units15
- Effect of Out-Of-Range Input Signals15
- Example Change in Input Level15
- Effect of Voltage Input on Type J Thermocouple16
- Effect of Voltage Input on Type K Thermocouple16
- Effect of Voltage Input on Type R Thermocouple16
- Effect of Voltage Input on Type S Thermocouple16
- Effect of Voltage Input on Type T Thermocouple17
- Effect of Voltage Input on Type E Thermocouple17
- Effect of Voltage Input on Type L Thermocouple17
- Effect of Voltage Input on Millivolt Range17
  - Resolution18
  - Analog-To-Digital Converter Filter18
- Input Resolution18
Chapter 2 Installation19
Getting Started20
- Planning the Installation20
- Calculating the I/O Base Power Budget20
- Unpacking the Module20
Configuring the Module21
- Selecting Thermocouple or Millivolt Measurement Via DIP Switch22
- Selecting Thermocouple Type Input Via Hardware Jumpers22
- Selecting PLC Login Mode22
- Selecting Data Format22
- Selecting Digital Filtering23
- Select Degrees Celsius or Fahrenheit24
- Factory Configuration Jumper Settings24
  - Inserting the Module into the I/O Base25
- Configuration Jumper Location25
  - Wiring the Input Connectors26
- Input Connector Wiring26
- Thermocouple Wiring Application27
- Millivolt Wiring Application27
  - Connecting the Shield Wiring28
- Cable Grounding29
  - Checking Module Operation30
- Example Configuration Chart30
Advanced Software Functions32
- Introduction33
- Overview of the Advanced Functions33
Chapter 3 Advanced32
Advanced Software Functions33
- Setting the Module Configuration Jumper34
- Configuring the SIMATIC 505-2556 Module for Advanced Features34
  - Logging the Module in the Controller I/O Configuration Memory35
- SIMATIC 505-2556 I/O Configuration Chart35
Internal Register Structures36
- Description of the I/O Registers36
- Input Registers36
- Input and Output Register Offsets36
- Input Channel Data36
- Input Flag Bits37
- Discrete Handshake Inputs40
  - Outputs41
- Data Transfer Control Bits41
  - Data Identification Bits41
  - Loading Data into the SIMATIC 505-2556 Module42
- Data Loading Process42
- Sample Low and High Alarm Setpoints43
- Identifying the Data Being Transferred44
- Enabling the Functions Loaded45
- Loading the Enable Bits45
Loading Programs into the I/O Module46
- Startup Relay Ladder Logic47
Timing Considerations49
- Timing Constraints When Using Advanced Functions49
- Timing Overhead for Functions Enabled49
Additional Information about each Function50
- Default Values50
- Default Function Values50
- Degrees Centigrade or Degrees Fahrenheit51
- Scaling51
- Alarm Setpoints51
- Digital Filtering52
- Averaging53
- Peak and Valley Hold53
- Peak/Valley Truth Table53
  - Peak and Valley Hold Reset54
  - Flag Bits54
- Peak/Valley Reset Truth Table54
- Mapping Bit Position to Channel Number54
  - Advanced Function Precedence55
Troubleshooting56
- Troubleshooting the System56
- Troubleshooting Flow Diagram57
I/O Register Quick Reference58
Or K Memory Configuration Tables59
Addressing Worksheet61
Items Unique to the SIMATIC 505-2556 Module62
- Open Thermocouple Bits62
Appendix A Troubleshooting63
Appendix B Specifications64
- Physical and Environmental Specifications64
Appendix C Jumper Settings Log Sheet66
Appendix D Thermocouple Wire Guide67

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