Rockwell Automation 1746-INT4 Thermocouple/MV Isolated/ User Manual - Manual (Page 22)

Publication 1746-UM614B-EN-P - September 2007
22 Quick Start
10. Monitor the status of input channel 0 to determine its
configuration setting and operational status.
This is useful for troubleshooting when the blinking channel
LED indicates that an error has been flagged.
If the Module Status LED indicator is off, or if the Channel 0 LED
indicator is off or blinking, refer to Chapter 8.
Channel Configuration
Worksheet Select your bit configurations. Write them at the bottom of the
worksheet. Use one worksheet for each channel.
Channel 1 Data Word
Channel 2 Data Word
Channel 3 Data Word
Bit 15 Bit 0
Word 1
Word 2
Word 3
Address
I:1.4
Channel 0 Data Word Word 0
Word 7
Channel 1 Status Word
Channel 2 Status Word
Channel 3 Status Word
Channel 0 Status Word 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0
Input
Type
Data Format Open
C
ircuit
Type
Temperature Units Zero (not used) C
hannel Status
Open
C
ircuit Error
Under Range Error Over Range Error C
onfiguration Error
•
•
SLC 500 Controller Data Files
Output Image
Input Image
(8 words)
In this example, during normal operation only bit 11 is set.
Channel Configuration Word (O:e.0 … O:e.3) — Bit Descriptions
Bit or
Bits Define To select Set these bits in the Channel Configuration Word Description
15…12 11 10 9 8 7 6 5 4 3 2 1 0
0…3 Input
Type TC Type J 0 0 0 0 Project ______________
Slot Number _________
Channel Number ______
Configure the channel for the
input type connected to it. Valid
inputs are thermocouples and analog
input signals of ±50 mV and ±100 mV.
You can configure the channel to read
the cold-junction (CJC) temperature.
When reading the CJC temperature,
the channel ignores the physical input
signal.
TC Type K 0 0 0 1
TC Type T 0 0 1 0
TC Type E 0 0 1 1
TC Type R 0 1 0 0
TC Type S 0 1 0 1
TC Type B 0 1 1 0
TC Type N 0 1 1 1
±50 mV 1 0 0 0
±100 mV 1 0 0 1
TC Type C 1 0 1 0
TC Type D 1 0 1 1
Invalid 1 1 0 0
Invalid 1 1 0 1
Invalid 1 1 1 0
CJC Temp 1 1 1 1