Micromod MOD: Remote I/O Modules for use with 2020N Remote I/O Interface Module - Manual (Page 39)

Remote I/O Modules
INTERNAL DIAGNOSTICS
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INTERNAL DIAGNOSTICS
4.1 GENERAL
All modules execute automatic diagnostic tests which are specific to the module type. On the
occurrence of a fault, the red LED next to the TEST button is illuminated. When this LED is
constant, the fault is stored and the TEST button can be used to display the fault code and
the channel on which it occurred. When flashing, the remote module is not initialized (occurs
during power on). Fault codes are indicated by the LEDs on the modules.
4.2 USE OF “TEST” PUSH-BUTTON
The TEST button enables the type fault and the channel on which it occurred to be displayed
by a code on the I/O status LEDs in the following manner:
1. Press the TEST push-button to display the flashing LED of the channel with a fault.
2. Release the push-button to display the diagnostic information for the selected channel.
3. Press the TEST push-button again to display the flashing LED of the next channel with a
fault.
4. Release the push-button to display the diagnostic information for the next channel.
5. Press the TEST push-button after the last channel to test all the LED indicators.
6. Release the push-button to display the dip switch setting of the ECZ base on LEDs 0 to
7, switch 1 to 8.
7. Press the TEST push-button for more than 10 seconds to clear all of the stored faults
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