adccommunitymod (AutomationDirect) asked a question.
Created Date: August 14,2015
Created By: OkiePC
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I noticed the Buffer Full bit is available, but I am curious if there is a register that will tell me the actual buffer level at any given time. I am working on an application that is quite communications intensive with three Productivity 2000 PLCs communicating over serial radio modems. There is one "Master " PLC that will be reading and writing to the other two using Modbus protocol. It will also be polling (only reading) 3 other Modbus devices with the future potential of adding two more. I have two of them "talking " over a wired connection and have set up all of the MRW and MRX instructions along with some calculations for the "percent successful " for each node. I use a timer to regulate the interval between messages and a counter to rotate through them all in a sequence. It is all working well. When I was experimenting, I set the interval timer to a very low value and did fill the buffer once, indicated by the RS232-Buffer Full bit going high. That made me curious if I could monitor the actual buffer level. Thanks, Paul
Created Date: April 09,2016
Created by: Westmeath
I also would love to see this feature.... as I am also implementing a fairly extensive Ascii transfer.
Created Date: August 14,2015
Created by: OkiePC
I noticed the Buffer Full bit is available, but I am curious if there is a register that will tell me the actual buffer level at any given time.
I am working on an application that is quite communications intensive with three Productivity 2000 PLCs communicating over serial radio modems. There is one "Master " PLC that will be reading and writing to the other two using Modbus protocol. It will also be polling (only reading) 3 other Modbus devices with the future potential of adding two more.
I have two of them "talking " over a wired connection and have set up all of the MRW and MRX instructions along with some calculations for the "percent successful " for each node. I use a timer to regulate the interval between messages and a counter to rotate through them all in a sequence. It is all working well. When I was experimenting, I set the interval timer to a very low value and did fill the buffer once, indicated by the RS232-Buffer Full bit going high. That made me curious if I could monitor the actual buffer level.
Thanks,
Paul