Rockwell Automation 1746-NR4 SLC RTD/Resistance Input Module User Manual - Manual (Page 31)

Publication 1746-UM008B-EN-P - December 2006
Quick Start Guide 31
Write Remaining Ladder Logic
The Channel Data Word contains the information that represents the
temperature value or resistance value of the input channel. Write the
remainder of the ladder logic program that specifies how your
RTD/resistance input data is processed for your application. In this
procedure, the addressing reflects the location of the module as slot 1.
Input Image Detail
Test Your RTD Program
1. Apply power.
The module status LED indicator and channel 0 status LED
indicator turn on.
2. Download your program to the SLC processor.
3. Make sure the controller is in Run mode.
For more information see chapter 7, Module Diagnostics and
Troubleshooting.
LED Indicator Status
Channel 1 Data Word
Channel 2 Data Word
Channel 3 Data Word
Output Image
SLC 500 Controller
Data Files
Bit 15 Bit 0
Word 1
Word 2
Word 3
Address
I:1.0
Input Image
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Channel 0 Data Word Word 0
Word 7
(8 words)
Channel 1 Status Word
Channel 2 Status Word
Channel 3 Status Word
Channel 0 Status Word
(Variable RTD/resistance Input Data)
Address
I:1.0
I:1.1
I:1.2
I:1.3
I:1.7
• •
• •
• •
0
1
2
3
INPUT
Channel LEDs
Module Status LED MODULE STATUS
CHANNEL
RTD/resistance
STATUS