Rockwell Automation 1746-INT4 Thermocouple/MV Isolated/ User Manual User Manual
Page 58

Publication 1746-UM614B-EN-P - September 2007
58 Ladder Programming Examples
During the I/O scan, the SLC processor scans configuration words
from its output image file to the module, and scans data and status
words from the module to its input image file. The SLC processor
scans its I/O following each program scan.
We repeat the configuration word because it is used often in the
examples.
Configuration Word
Load Channel
Configurations for Transfer
to the Module
This example shows you how to set configuration bits and transfer
configuration data of all four channels to the module with a single File
Copy instruction.
1. In RSLogix 500 software, open the data file N10 to configure the
module parameters.
12
13
14
15
9
10
8
6
1
2
3
0
0
1
0
0
0
0
1
0
0
0
1
1
0
0
0
7
4
5
0
11
Example Configuration Word with These Parameters:
channel enabled, °C, zero for open-circuit, EU x10, Type K thermocouple
Not Used
Channel
Enable
0 = Disable
1 = Enable
Not Used
Temp
Units
0 = °C
1 = °F
Response to
Open-circuit
0 0 = zero
0 1 = FS
1 0 = LS
Data
Format
0 0 = EU x1
0 1 = EU x10
1 0 = Scaled PID
1 1 = Prop Counts
Type
of Input
0 0 0 0 = Type J
0 0 0 1 = Type K
0 0 1 0 = Type T
0 0 1 1 = Type E
0 1 0 0 = Type R
0 1 0 1 = Type S
0 1 1 0 = Type B
0 1 1 1 = Type N
1 0 0 0 = ±50 mV
1 0 0 1 = ±100 mV
1 0 1 0 = Type C
1 0 1 1 = Type D