adccommunitymod (AutomationDirect) asked a question.
Trying to read memory from DL05 through modbus
Created Date: April 14,2014
Created By: smcmains
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I'm currently trying to read the value of V2010 on a DL05 plc. Im using RS485 from another PLC (other name brand) running through FA-ISOCON to the DL05, trying to communicate through MODBUS. I'm not getting anything and I have tried everything I know for the last week. Is there something simple I'm missing? Im trying to access V2010 value and using Modbus memory location as 41033. Is this the correct location? Thanks, Steve
Created Date: April 14,2014
Created by: bcarlton
Which are you getting:
No response at all - electrical hookup or communication parameters incompatibility
A response with an error code - incorrectly formed request or address problem (I think the address you posted is correct)
A response with no error code but not the expected contents - try changing the address by 1 either way.
Created Date: April 15,2014
Created by: OpZed
http://www.automationdirect.com/static/specs/d005aa.pdf
On the last page gives the DL05 default port configurations. If you 're not using these then you'll need to "Setup Secondary Comm Port ".
How did you wire the FA-ISOCON and what DIP switches are enabled?
Is there anything else on the RS485 network?
Created Date: April 14,2014
Created by: smcmains
I'm currently trying to read the value of V2010 on a DL05 plc. Im using RS485 from another PLC (other name brand) running through FA-ISOCON to the DL05, trying to communicate through MODBUS. I'm not getting anything and I have tried everything I know for the last week. Is there something simple I'm missing? Im trying to access V2010 value and using Modbus memory location as 41033. Is this the correct location?
Thanks,
Steve