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I'm using the contact on an HC300 for a reed switch.

This was working fine but C4 no longer reports the door as open.
The connections have not changed in C4
A volt meter reads 12v on the reed switch NO and NC appropriately
The physical connections are 12V and SIG

Any thoughts on what to check within C4 to figure out why it is no longer working?

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Thanks for the advice - I will try  a ping asap.

The HC300 does control my DMX lighting via the serial port - which are working ok - so I'm assuming the HC300 is connecting fine.

I did recently replace the power supply in this unit due to it failing - I wonder if other parts are now failing.... ?

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2 hours ago, brucecampbell said:

Thanks for the advice - I will try  a ping asap.

The HC300 does control my DMX lighting via the serial port - which are working ok - so I'm assuming the HC300 is connecting fine.

I did recently replace the power supply in this unit due to it failing - I wonder if other parts are now failing.... ?

ah strange. yes if a second device is serial controlled the controller should be online just fine. contacts are very basic. So if all the cables are securely connected, and the devices are powered it should work. However its possible that when the power supply failed other things may have been damaged. Or that new power supply could be failing again. You could get an io extender inexpensively  to replace this as an option we have some older ones for sale!

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2 hours ago, Matt Lowe said:

ah strange. yes if a second device is serial controlled the controller should be online just fine. contacts are very basic. So if all the cables are securely connected, and the devices are powered it should work. However its possible that when the power supply failed other things may have been damaged. Or that new power supply could be failing again. You could get an io extender inexpensively  to replace this as an option we have some older ones for sale!

Will PM you regarding IO extenders.

Thanks

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