Manual

6–2 Troubleshoot the CFM Module
Publication 17716.5.99 - December 1995
The CFM module returns diagnostics to the PLC processor in words
one and two of the BTR file. These diagnostics give you the number
of the word in the BTW configuration block that has caused an error
to occur.
Important: In the event that there are multiple incorrect
BTW words, the CFM module only returns the first
incorrect word.
Diagnostic Words in the BTR File
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Powerup Bit indicates if a
valid BTW has occurred since
powerup or since last
switched from Program to
Run mode.
Header (CFM module ID)
must be 0010.
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Error Words & Diagnostics displays
invalid BTW word number (060 BCD).
99 = invalid BTW length
Output Status reflects current
operating state of outputs.
b12 = Output 0 b13 = Output 1
b14 = Output 2 b15 = Output 3
VALUES:
0 = OFF
1 = ON
word 2
word 1
0010
VALUES: 1= no or invalid BTW
0 = yes
To find out more about the CFM module:
specifications on the CFM module
See appendix For
Specifications
Schematics
input and output circuit drawings
A
B
Diagnostics
What's Next