Allen-Bradley 1794-IRT8 - Chapter Summary

Publication 1794-6.5.12 - November 1997
Programming Your Thermocouple/RTD Input Module 3-5
Chapter Summary In this chapter, you learned how to program with your IRT8 input module
using block transfer instructions and ladder logic. Now, you can configure
your module.
EN
BTR
BLOCK TRANSFER READ
Rack
Group
Slot
Control Block
14
1
0
BR141:0
DN
Data File
BT Length
Continuous
2BTD5:101
0
NO
ER
EN
BTW
BLOCK TRANSFER WRITE
Rack
Group
Slot
Control Block
14
1
0
BW141:0
DN
Data File
BT Length
Continuous
2BTD5:1
0
NO
ER
BR141:0
EN
BR141:0
EN
BW141:0
EN
Rung 1STEPO:1
The IRT8 module is located in rack 14, I/O group 1, slot 0. The data obtained by the PLC-5/250 processor from
the IRT8 module is placed in the data table starting at 2BTD5:101, and with the default length of 0, is 11 words
long. The length can be any number between 0 and 11.
BW141:0
EN
Rung 1STEPO:1
The IRT8 module is located in rack 14, I/O group 1, slot 0. The data sent to the IRT8 module from the PLC-5/250
processor is from the data table starting at 2BTD5:1, and with a default length of 0, is 4 words long.
Valid BTW lengths: 0, 1, 2, 3, and 4.
IRT8 BTR
Enable Bit
IRT8 BTW
Enable Bit
IRT8 BTR
Control File
IRT8 BTR
Enable Bit
IRT8 BTW
Enable Bit
IRT8 BTW
Control File
BT Timeout 4
BT Timeout 4
PLC-5/250 Processor
Program Example
Configure the
IRT8 Module
4