Rockwell Automation 1771-TCM,D17716.5.108 TEMPERATURE CONTROL MOD - Manual (Page 11)

Introduction to the Temperature Control Module
Chapter 1
1-3
The barrel temperature control module communicates with the PLC
processor by both block-transfer and single-transfer. The ladder logic must
include block-transfer write instructions to send the following data blocks
to the module:
a configuration block for each PID loop (8 max)
gains
block
dynamic block
calibration block (not required for normal operation)
The ladder logic must include block-transfer read instructions to get the
following data blocks from the module:
system status
gains block
calibration block (not required for normal operation)
The ladder logic must also include instructions for dealing with an input
image byte single-transferred from the module. This byte contains the
control-variable output of each loop as the duty cycle of a bit that is cycled
at a regular period. Each bit represents one of the 8 PID loops.
Configuration Block for Loop 2
23 words
Configuration Block for Loop 1
23 words
Configuration Block for Loop 3
23 words
Configuration Block for Loop 4
23 words
Configuration Block for Loop 5
23 words
Configuration Block for Loop 6
23 words
Configuration Block for Loop 7
23 words
Configuration Block for Loop 8
23 words
Gains Block
57 words
System Status Block
64 words
Calibration Write Block
20 words
Dynamic Block
34 words
1771ĆTCM Module PLC Data Table
SingleĆtransfer
Input Byte
BlockĆtransfer
BlockĆtransfer
BlockĆtransfer
BlockĆtransfer
BlockĆtransfer
BlockĆtransfer
BlockĆtransfer
BlockĆtransfer
BlockĆtransfer
BlockĆtransfer
BlockĆtransfer
BlockĆtransfer
Calibration Read Block
14 words
BlockĆtransfer
Output Byte
SingleĆtransfer
How the Temperature
Control Module
Communicates with
Processors