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angi

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• Feb 22, 2010

• #1

Hi Guys

One thing need to check with you guys:

If I had configured to send Message out of PLC by serial port(RS232)to a workstation, could I still use this port connect with my laptop when I want to update the PLC program?

Thanks

 

Mickey

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• Feb 22, 2010

• #2

What PLC are you using?

 

angi

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• Feb 22, 2010

• #3

Slc5/04

 

Mickey

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• Feb 22, 2010

• #4

Yes. But be advised the Message instruction will get an error if it is disconnected from the other device.

If you do this a lot the you could disable the messages thru logic when your programming.

Are you going to do this with the DH+ port or serial port?

 

angi

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• Feb 22, 2010

• #5

Thanks Mickey.

I want to send a string to a device using serial port, To disable the message, you mean just temporaliy disable the message logic when I connect the laptop to serial port, and put it back after updating?

 

Mickey

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• Feb 22, 2010

• #6

angi said:

Thanks Mickey.

I want to send a string to a device using serial port, To disable the message, you mean just temporaliy disable the message logic when I connect the laptop to serial port, and put it back after updating?

Click to expand...

String? If the port is set up for ASCII protocol then you cannot use it for programming.
There are ways to toggle the port settings from "User" to "System". (see text file below)

 

Last edited: Feb 22, 2010