Manual

1–3 Interfacing with the Temperature Control Module
Publication 17716.4.5 - January 1997
The following graphic illustrates how the individual data blocks are
sent to and returned from the TCM module.
Configuration Block for Loop 2
26 words
Configuration Block for Loop 1
26 words
Configuration Block for Loop 3
26 words
Configuration Block for Loop 4
26 words
Configuration Block for Loop 5
26 words
Configuration Block for Loop 6
26 words
Configuration Block for Loop 7
26 words
Configuration Block for Loop 8
26 words
Gains Block
57 words
System Status Block
64 words
Calibration Write Block
20 words
AutoTune Block
57 words
1771TCM ModulePLC Data Table
Input Byte
BlockTransfer
BlockTransfer
BlockTransfer
BlockTransfer
BlockTransfer
BlockTransfer
BlockTransfer
BlockTransfer
BlockTransfer
BlockTransfer
BlockTransfer
BlockTransfer
Calibration Read Block
14 words
BlockTransfer
Output Byte
Dynamic Block
34 words
BlockTransfer
SingleTransfer
SingleTransfer
The computer with the Temperature Control software communicates
with the PLC processor across a local DH+ link or a DF1 serial link.
Important: For configuring temperature control loops, you can not
have the computer on one DH+ link and have the PLC
processor on another (remote) DH+ link even if they are
in the same DH+ network.
As shown in the following graphic, after entering configuration
selections at the computer, you can download them to disk files
and/or the PLC processor’s data-table interface area for use by the
module. Later, you can upload configuration selections from either
the disk files or the PLC processor’s data-table interface area for
making changes.
How the Temperature
Control Software
Interfaces with PLC
Processors