TROUBLESHOOTING
EDGE CONNECTOR PIN ASSIGNMENTS
WBPEEUI240756A0 5 - 3
Missing I/O Module Error
A missing I/O module error (no FEC response or wrong type)
occurs when the IMFEC1
address (set by dipswitch S1 on the
module) does not match the I/O module address in the control
module configuration (function code 132). This error appears
in the status bytes of the control module (bytes three through
five). A missing I/O module error sets byte three equal to 03
and bytes four and five equal to the block number of the miss-
ing I/O module. A missing I/O module error also occurs if the
I/O module and control module do not share the same I/O
expander bus. To correct a missing I/O module error:
1. Remove the module and check the setting of address
switch S1. It should match the I/O module address set in func-
tion code 132 in the control module configuration. If the I/O
module addresses match, go to Step 2. If the I/O module
addresses do not match, correct the I/O module addressing
error.
a. Change the setting of S1 on the I/O module to match
the I/O module address set in its configuration. Table 3-1
explains how to set the FEC address.
- or -
b. Modify the I/O module address in the control module
configuration (function code 132) to match the I/O module
address set by S1. Refer to the Function Code Applica-
tion Manual and Operator Interface Station instruc-
tions for information about changing the control module
configuration.
2. Verify that the I/O module and its control module reside on
the same I/O expander bus. There must be a 24-pin dipshunt
(all pins intact) installed in all dipshunt sockets of the MMU
between the FEC module and its control module.
Blinking Green Status LED
The green status LED on the IMFEC1
module blinks every
ten seconds if the module has a hardware failure. To correct a
hardware failure, replace the FEC module.
EDGE CONNECTOR PIN ASSIGNMENTS
Edge connector pin assignments (P1, P2 and P3) are listed in
Tables 5-3 through 5-5. The pin assignments for J1 (connector
for the LCD diagnostic display) are in Table 5-6.
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