Rockwell Automation 1771-CFM Config. Flowmeter Installation Instructions - Manual (Page 16)

Configurable Flowmeter Module 16
Publication 1771ĆIN043B-EN-P - July 2002
The CFM module returns diagnostics to the PLC processor in words
one and two of the BTR file. These diagnostics give you 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.
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
PowerĆup Bit indicates ifa valid BTW
has occurred since powerĆup 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 (0Ć60 BCD).
99 = invalid BTW length
Output Status reflects current
operating state ofoutputs.
b12 = Output 0 b13 = Output 1
b14 = Output 2 b15 = Output 3
VALUES:
0 = OFF
1 = ON
ЙЙЙЙЙ
ЙЙЙЙЙ
word 2
word 1
ЙЙЙЙЙЙЙЙЙЙЙЙЙЙ
ЙЙЙЙЙЙЙЙЙЙЙЙЙЙ
0 0 1 0
VALUES: 1= no or invalid BTW
0 = yes
The CFM module provides these status indicators:
Indicators If indicator Is ON Is OFF
ACTIVE
the CFM module is successfully receiving
power and operational
a. Check FAULT LED Ċ ifon, follow the steps
listed under ifFAULT is ON.
b. Check the power supply.
INPUTS
(F0ĆF3 & G0ĆG3)
a signal is present at the designated
input terminal
a signal is not present at the designated
input terminal
ACTIVE
OUTPUTS
(O0ĆO3)
the module has commanded an output on the output is off
S0 S1 S2 S3
S4 S5 S6 S7
INPUTS/OUTPUTS
FAULT
STATUS
F0 F1 F2 F3
G0 G1 G2 G3
O0 O1 O2 O3
S1
STATUS
S2
S3
PowerĆup Bit (BTR word 1, bit 00) is ON
(=1) Ċ BTW hasn't occurred since
powerĆup, or invalid BTW, or
PLC processor in Program mode
BTW is occurring
BTR is occurring
PowerĆup Bit (BTR word 1, bit 00) is OFF (=0) Ċ
valid BTW has occurred since powerĆup or since
last switched from Program to Run mode
BTW is not occurring
BTR is not occurring
FAULT
1. Turn off power to the I/O chassis
backplane and wiring arm.
2. Reseat the CFM module in the I/O
chassis.
3. Restore power to the I/O chassis
backplane and wiring arm.
Important Ifthe fault LED remains on,
there may be an internal
problem. Contact your local
AllenĆBradley representative
for additional assistance.
normal operation
Diagnostics and
Troubleshooting
Status Indicators