MVI56-ADM and RS485 problem
You need to be logged in to get access to the forums. You can do so here
|
alexey
|
Wednesday 26 July 2006 4:15:35 am |
|
|
MVI56-ADM and RS485 problem
I make simple programm for test this connection, but this don't work. Programm send some data in serial port and wait for some answer. Communication have next structure:
[mvi56-adm]-rs485-[adam-4520]-rs232-[personal computer]
When programm send data to computer, i see this. But when computer send data back, my programm read 0 bytes, and have timeout error (GetData function call with timiout parameter = 1000 ms, back data from PC sended with less time).
When i change configuration for work with rs232:
[mvi56-adm]-rs232-[PC]
or with rs422:
[mvi56-adm]-rs422-[adam-4520 (in 422 mode)]-rs232-[PC]
my programm work fine: I see data in PC and data on MVI module.
May be I need special configuration in programm for work in rs485 mode?
PS: sorry for my english
|
|
jsanders
|
Wednesday 26 July 2006 10:28:26 am |
|
|
RE:MVI56-ADM and RS485 problem
Diagnosing problems with C-programmable modules is often a complex matter. To help you solve your issues, I suggest you send your ladder logic, source code, compiled .EXE files, and the .IMA files you have been trying to use, along with the PC program you are trying to interface with and a full description of the problem(s) you are experiencing, to ProSoft Technical Support at: Support@psft.com.
Once your files are received, your case will be given a Service Request Number and assigned to a Technical Support Engineer to help you resolve these issues.
|
