BX-08THM Module Scaling

[BobO]

That button has nothing to do with configuring anything. It is is just there to allow you to specify the module units in counts or V/ma/temp units.

[ATU]

Found it, extension wires reversed.

[ATU]

For my application, normal operation will be not having some or all  thermocouples attached.  It will be part of my machine configuration, not the module setup and I will check for what is connected in my program.   I am getting IO error ST152 all the time when there are TCs missing. Is there anyway to suppress that or configure programmatically which channels are active?

[BobO]

For my application, normal operation will be not having some or all  thermocouples attached.  It will be part of my machine configuration, not the module setup and I will check for what is connected in my program.   I am getting IO error ST152 all the time when there are TCs missing. Is there anyway to suppress that or configure programmatically which channels are active?

ST152 is read/write. You should be able to clear it in code.

Barring that, short the unused channels.

[ATU]

I tried that, but the fault came back. I guess I'll have to make up a shorting plugs for unused channels.

[BobO]

I tried that, but the fault came back. I guess I'll have to make up a shorting plugs for unused channels.

Add a rung to keep it off.

[ATU]

But what happens if I have a real I/O problem, then I won't know. Planning on using jumpers.  That works.

[BobO]

But what happens if I have a real I/O problem, then I won't know. Planning on using jumpers.  That works.

Well...yeah...If you care.

[ATU]

When I add a jumper for the unused channels using standard wire, I get 292 in the WX regisiter for all shorted channels, which is 29.2 degC. I would have thought that I would be reading a really high  number, but its 292 on type "T".  None of the status bits come on.  How can I detect that?

[BobO]

When I add a jumper for the unused channels using standard wire, I get 292 in the WX regisiter for all shorted channels, which is 29.2 degC. I would have thought that I would be reading a really high  number, but its 292 on type "T".  None of the status bits come on.  How can I detect that?

I honestly don't know. That's a question for ADC or FACTS.

[mhw]

When I add a jumper for the unused channels using standard wire, I get 292 in the WX regisiter for all shorted channels, which is 29.2 degC. I would have thought that I would be reading a really high  number, but its 292 on type "T".  None of the status bits come on.  How can I detect that?

The shorted inputs should show the temperature at that connection.

[Controls Guy]

When I add a jumper for the unused channels using standard wire, I get 292 in the WX regisiter for all shorted channels, which is 29.2 degC. I would have thought that I would be reading a really high  number, but its 292 on type "T".  None of the status bits come on.  How can I detect that?

How can you detect what?  Doesn't the app know which channels are shorted?  Reading the local temp is normal for shorted T/C channels.  If it's a field-configurable OTS app and the app needs to know how many channels are in use I think you're going to have to have the user enter which channels he's using.

[ATU]

Reading the local temp is normal for shorted T/C channels. 
[/quote

I didn't know that. Makes sense. First time using a thermocouple  module. Thanks.