momentum

stewy5000

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S

Join Date

Jul 2007

Location

Pennsylvania

Posts

16

• Jul 25, 2007

• #1

why do exclamation marks appear on my parker ctc screen being fed by a modicon momentum. I'm using bridge tees and everything looks ok. I don't know what else to look for.

 

cciblazer

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C

Join Date

Mar 2003

Location

Kansas

Posts

42

• Jul 25, 2007

• #2

You are not communicating with the PLC. What's changed did you modify a program, troubleshooting a working screen or a new project from scratch.

 

stewy5000

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Jul 2007

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Pennsylvania

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16

• Jul 25, 2007

• #3

it seemed to start happening after a storm where there was power outages.

 

cciblazer

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C

Join Date

Mar 2003

Location

Kansas

Posts

42

• Jul 25, 2007

• #4

When you say bridged tees... are we talking ethernet? If so are there any switchs or hubs that could have been taken out by lightning etc. I would test the cable if it checks out. Test your ports to the plc and ctc.

 

stewy5000

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Join Date

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Pennsylvania

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16

• Jul 30, 2007

• #5

Modbus plus tees.
It seems like I checked everything.
resistance from one side of the tee to the other.
continuity between the ctc screen and the plc(cable)