Channel status words – Rockwell Automation 1746-NO8V SLC 500 8-Point Analog Output Module/ User Manual User Manual
Page 67
Publication 1746-UM026A-EN-P - September 2003
Replacing 1746-NO4s with 1746-NO8 B-3
Channel Status Words
In Class 1 mode, the 1746-NO8 provides one status input word per
channel which is not available with the 1746-NO4. Consideration
should be given to implementation of user program logic to monitor
the status when converting from the 1746-NO4 module.
The Channel Status Words are addressed as follows:
In Class 1 mode, each channel status word contains the following
useful status information:
Bits 1 through 11 provide additional status information when Class 3
mode is configured. For more definition of status word bit use, refer
to Chapter 4.
Table B.3 1746-NO8V and 1746-NO4V Output Range
Voltage Range
Decimal Representation for
Output Word
Resolution per LSB
-10 to +10V dc
-32,768 to +32,764
1.22070 mV
0 to 10V dc
0 to 32,764
0 to 5V dc
0 to 16,384
1 to 5V dc
3,277 to 16,384
1746-NO8 Status Word Addressing
•
I:3.0 - Slot 3, Channel 0 Status Word
•
I:3.4 - Slot 3, Channel 4 Status Word
•
I:3.1 - Slot 3, Channel 1 Status Word
•
I:3.5 - Slot 3, Channel 5 Status Word
•
I:3.2 - Slot 3, Channel 2 Status Word
•
I:3.6 - Slot 3, Channel 6 Status Word
•
I:3.3 - Slot 3, Channel 3 Status Word
•
I:3.7 - Slot 3, Channel 7 Status Word
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Fatal Channel Error (0 = OK, 1 = error)
Module/SLC Resetting (0 = OK, 1 = reset)
Current Loop Open (0 = OK, 1 = open)
24V Power Failure (0 = OK, 1 = failure)
Channel Enabled (0 = off, 1 = on)