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Detecting low voltage on PLC bus

How-to & Troubleshooting

Last Post by Duncan 2 years ago

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Posts: 15

Duncan

Topic starter

Feb 10, 2023 10:36 pm

(@duncan)

Eminent Member

Joined: 2 years ago

Hey guys,

Is anyone aware of a way to read low bus voltage on the PLC.

i.e. PLC is still powered, but PLC io blocks have lost voltage?

Obviously I can feed this voltage into an input to see when voltage is removed, but is the a status register somewhere that will accomplish the same thing?

Cheers

Duncan

Topic Tags

TwinCAT register statuslight

2 Replies

Posts: 1

ArthurDent

Feb 22, 2023 4:34 am

(@arthurdent)

New Member

Joined: 2 years ago

Hi Duncan,

you could use WcState or State for a general error that will occur when remove voltage.

ArthurDent

Posts: 15

Duncan

Topic starter

Mar 15, 2023 6:05 pm

(@duncan)

Eminent Member

Joined: 2 years ago

Thanks! Yeah, general error would cover my needs. Will look into this!

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