Rockwell Automation AB quality Allen-Bradley 1746-INT4 User Manual page 54

Thermocouple/mv isolated input module
Table of Contents

Advertisement

54
Channel Configuration, Data, and Status
Channel Status Word, Channels 0...3 (I:e.4 through I:e:.7) — Bit Definitions
Bit or
Reflect/
Configured for With This Bit Code
Bits
Indicate
0 ... 3
Input
TC Type J
Type
TC Type K
TC Type T
TC Type E
TC Type R
TC Type S
TC Type B
TC Type N
±50 mV
±100 mV
TC Type C
TC Type D
Invalid
Invalid
Invalid
CJC Temp
4, 5
Data
Engr. Units x1
Format
Engr. Units x10
Scaled-for-PID
Counts
6, 7
Open
Zero
Input
Upscale
Mode
Downscale
Invalid
8
Units
Degrees C
°F, °C
Degrees F
9, 10
Unused
Unused
11
Chnl
Channel Off
Enable
Channel On
Publication 1746-UM614B-EN-P - September 2007
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0
0
0
1
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0 The module faults when it
1 1 0 1
1 1 1 0
1 1 1 1
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
0
1
Reflects Configuration in
Bits 0...11 and Indicates
Detected Faults in Bits
12...15
Reflects the type of channel
input.
detects an invalid
configuration.
Reflects the type of data
format.
Reflects module response to a
detected open input circuit (for
all input types including CJC
thermistor). The module faults
when it detects an invalid
configuration.
Reflects temperature units.
Faults when it detects a
non-zero value.
Reflects enabled/disabled
channel status. Status word of
a disabled channel is zero.
Channel data and status words
remain cleared until the
module sets this bit in
response to a new
configuration word.

Advertisement

Table of Contents
loading

Table of Contents