10.4 Clearing Errors Using User Programs
10.4.1 Clearing Errors Using User Programs
● Each error can be cleared by user programs.
● Refer to error codes, correct error factors, and clears the errors.
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Clearing unit by UCLR instruction
● Executing the dedicated instruction UCLR clears errors occurred in a unit.
Example) Program to clear errors of a unit installed in the slot No.1
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Resetting Communication ports by I/O signals
● Communication ports can be reset by turning on the reset request signals (Y10 to Y13) with
user programs when a communication error occurs.
● The signals (X0 to X13) turns on when the reset is completed. Then, turn off the reset
request signals (Y10 to Y13).
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Allocation of I/O signals
Signal name COM.0 COM.1 COM.2 COM.3 COM.4
Request to reset CH Y12 Y10 Y11 Y12 Y13
Reset done X12 X10 X11 X12 X13
(Note 1) The above I/O numbers are those for the slot number 0 (CPU with built-in SCU) and the COM. 1 port.
The I/O numbers actually used vary according to the slot number where the unit is installed and the
starting word number.
10.4 Clearing Errors Using User Programs
10-10 WUME-FP7COM-07
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