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TOPIC: How can I test the external I/Os to check if they are working?

How can I test the external I/Os to check if they are working? 4 years, 6 months ago #450

  • RDC
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HI, I am using the expanded I/Os on the SM23165DT-AD1 and run it through the PLC (Mitsubishi FX3u series). I have wired the I/Os sourcing as the manual states straight to the I/Os of the PLC and pin 11 and 12 to 24V and 0V respectively. Right now I have no communication whatsoever between them. I am using two motors in daisy chain and it goes directly to an HMI and from there to the PLC. But in the software of the SMI I am trying to force the I/O's setting them to one or zero and it does not respond on the PLC outputs, there is not even a change in a meter in the I/OsI am forcing and no response or any movement by the motor with those I/Os. I can home the motor perfectly without problem. This is my software code:

SADDR2
WAKE
O=0
MF0
EIGN(2)
EIGN(3)
ECHO
ZS
C5
ab[10]=W(16)
RW(16)
a=1
OUT(W,1)=aw[0]
OR(W,1,a)
OS(21)
PRINT("WORKING",#13)
WAIT=3000
OR(21)
PRINT("WORKING",#13)
WAIT=3000
GOTO5
END


Any help is welcomed, thanks.

Re: How can I test the external I/Os to check if they are working? 4 years, 6 months ago #452

  • RDC
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Dont worry I got it already it was a miswiring
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