adccommunitymod (AutomationDirect) asked a question.
Created Date: September 19,2019
Created By: ThomasDcOps
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I can normally figure out most basic modbus coms but this one has left me confused what its looking to be passed or how. I have tried everything I can in the modbus write functions with no luck. Its probably something dumb I'm over looking. Basler modbus list shows the following Name Description Group Register Type Bytes R/W Unit Range Coms Control Group Run Mode GG 5518 Uint32 4 R W n/a Trigger=1 I 've tried different functions, data types and format to pass it a "1 ". I 've received 01:ILLEGAL FUN or 03:ILL DATA VAL Any help would be appreciated.
Created Date: September 19,2019
Created by: ThomasDcOps
I can normally figure out most basic modbus coms but this one has left me confused what its looking to be passed or how. I have tried everything I can in the modbus write functions with no luck. Its probably something dumb I'm over looking.
Basler modbus list shows the following
Name
Description
Group
Register
Type
Bytes
R/W
Unit
Range
Coms Control Group
Run Mode
GG
5518
Uint32
4
R W
n/a
Trigger=1
I 've tried different functions, data types and format to pass it a "1 ". I 've received 01:ILLEGAL FUN or 03:ILL DATA VAL
Any help would be appreciated.
Created Date: September 19,2019
Created by: Todd Dice
It may be helpful to see your PLC code. I'm assuming you 're using a Modbus Write instruction?
Created Date: September 19,2019
Created by: kewakl
I 've tried different functions, data types and format to pass it a "1 ". I 've received 01:ILLEGAL FUN or 03:ILL DATA VAL
Any help would be appreciated.
Both exceptions code using the same value? Well, maybe we can take comfort that the errors were returned - maybe this indicates that the cabling is good.
Serial or ethernet?
Add/subtract '1 ' from 5518.
What numeric base is this 5518?
btw, I am not creating a basler account just to download the manuals.
Created Date: September 19,2019
Created by: ThomasDcOps
{ "data-align ": "none ", "data-size ": "full ", "title ": "Capture.JPG ", "data-attachmentid ":125238}
Created Date: September 19,2019
Created by: ThomasDcOps
{ "data-align ": "none ", "data-size ": "full ", "title ": "Capture2.JPG ", "data-attachmentid ":125240}
Created Date: September 19,2019
Created by: ThomasDcOps
Its modbus TCP, I can get other data from this unit without issue.
Created Date: September 19,2019
Created by: ThomasDcOps
{ "data-align ": "none ", "data-size ": "full ", "title ": "Capture3.JPG ", "data-attachmentid ":125243}
Created Date: September 19,2019
Created by: kewakl
With the other MRX/MWX that work correctly, is the slave node 1? Default is 255 unless going thru a server/bridge type devices.
Is 32-bit to 16-bit mapping the same? is word swap the same?
Is there any other param required before you can use this register to remotely enter/exit RUN mode?
Created Date: September 19,2019
Created by: MikeN
Is "test5 " tag a Int32 data type?
Created Date: September 23,2019
Created by: OkiePC
Instead of trying to write to it, you might try reading a single register first at that same modbus address. That may help you to figure out if bytes or words are swapped. Then try writing that same value back as a single register (instead of multiple registers).