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MELSEC-Q
5 SETUP AND PREPARATION
5.4 Hardware Test
The hardware test checks whether or not the module operates normally in stand-
alone condition. It performs ROM check, RAM check, self-loopback test, etc.
Be sure to perform the hardware test before building a system.
For the test related to DeviceNet communications, refer to Section 5.6
Communication Test and perform it after wiring.
Execute the hardware test in the following sequence:
Start
Connect network power supply and power
it on. (See Section 5.5.)
Set mode to 9. (See Section 5.3.3.)
Test result?
Failed
Normal completion
By powering on from off or resetting CPU
module, test starts.
During test, MS LED flashes green.
RUN
ERR.
MS
NS
When completed normally, MS LED stays
on green.
RUN
ERR.
MS
NS
When failed, MS LED turns off and ERR.
LED turns on.
RUN
ERR.
MS
NS
End
Check error code in Hardware Test Result
Area (address: 062F
H
), and take corrective
actions.
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