WITS over Serial
- Thread starter LMBrian
- Start date
Steve Bailey
Lifetime Supporting Member + Moderator
Since I don't know what WITS is an acronym for, I probably shouldn't be responding. However, I do have experience implementing serial protocols on GE equipment, so if you can point me to a site that explains WITS, I might be able to help.
Hi Steve,
It means Wellsite Information Transfer Specification.
http://home.sprynet.com/~carob/
Thank you
It means Wellsite Information Transfer Specification.
http://home.sprynet.com/~carob/
Thank you
Steve Bailey
Lifetime Supporting Member + Moderator
Have you looked at Chapter 14 of the manual GFG2222? It describes what you will need to do to set up COMMREQ instructions for serial I/O. You will need to execute one or more COMMREQs to set up the port, but ultimately you'll be using the "Write Bytes" function (code 4401) to send up to 125 words (250 bytes). You will also have to put the proper values into the consecutive data registers prior to executing the COMMREQ so that the receiving device can correctly interpret the data.
It will save a lot of time using a Serial Port Module for that type of communications and "time is money". IC695CMM002
I use the Excel file to help lay out the ASCII characters.
I use the Excel file to help lay out the ASCII characters.
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Thank you Steve,
Did you mean GFK 2222 and Ch. 6? We will just be receiving 6-8 data packages so I guess I will need to use Read Bytes (4402).
Thank you.
Hi Russ,
I'm not sure if we have the physical space to install a comms module but yes...time is money.
Steve Bailey
Lifetime Supporting Member + Moderator
Yes GFK2222. The revision level I have is GFK2222K and it has the serial I/O information in Chapter 14.
Does this PLC have a Quick Panel HMI as a target in the same Proficy project? I've often found it easier to get serial data through the QP's serial port than to set up and execute COMMREQs.
See what you get for making assumptions. I was assuming the PLC was the source of the data, not the recipient.
Does this PLC have a Quick Panel HMI as a target in the same Proficy project? I've often found it easier to get serial data through the QP's serial port than to set up and execute COMMREQs.
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Unfortunately not. I came across this on the GE Knowledge centre and hoping someone has a pdf of it! I'm currently running ME 7.5 so cannot open it.
https://ge-ip.force.com/communities...e-Unknown-Number-of-Characters-via-Serial-I-O
Steve Bailey
Lifetime Supporting Member + Moderator
Here it is.
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