ABB IMDSI1448 VDC Digital Input Module
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 missing 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 function 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.
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