adccommunitymod (AutomationDirect) asked a question.
Created Date: April 18,2017
Created By: mswanny
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I'm trying to transmit some data from my Productivity2000 PLC into a COM port on a windows laptop. I 've gotten output from the PLC into the laptop, but it seems that it's not being transmitted and decoded in the same fashion (it's a bunch of random characters that I'm looking at). I 've got some float data under the tags Pressure 1, Pressure 2, Temperature 1, Temperature 2, and I'm using the "Modbus Write " function to try to output those through the RS232 and into a USB port, COM9, where I read the data as serial information through python 2.7. I think I can get it to work if I take the data in each of the tags and turn them into strings and use the "Serial Write " function in place of the "Modbus Write " function, is there a way to change the data into a string format? Is there another way to transmit the data easily?
Created Date: April 18,2017
Created by: mswanny
I'm trying to transmit some data from my Productivity2000 PLC into a COM port on a windows laptop. I 've gotten output from the PLC into the laptop, but it seems that it's not being transmitted and decoded in the same fashion (it's a bunch of random characters that I'm looking at).
I 've got some float data under the tags Pressure 1, Pressure 2, Temperature 1, Temperature 2, and I'm using the "Modbus Write " function to try to output those through the RS232 and into a USB port, COM9, where I read the data as serial information through python 2.7.
I think I can get it to work if I take the data in each of the tags and turn them into strings and use the "Serial Write " function in place of the "Modbus Write " function, is there a way to change the data into a string format? Is there another way to transmit the data easily?
Created Date: April 19,2017
Created by: Do-more PE
Get a Modbus comms analyzer to be sure that you can see the data correctly. There are a ton of options out there. Once you ge the physical hardware working, then it will be a lot easier to figure out why your app isn't functioning.