pirate Posted June 3, 2008 Report Posted June 3, 2008 I have a E1043 that is connect to a A series PLC. This all works well. I now want the E1043 (which is connected to LAN) to communicate with a Field Electronics 1000plus (connected to same LAN) (http://www.fieldelectronics.com/) I know the Field product works as I have a Prodigy SCADA which talks to that at the moment. I am stuck when it comes to the Modbus Driver. I have installed the Modicon Modbus Master Driver and set up the IP address however the 1043 just brings up a comms error( 2:Comm err0-). The one thing that I do not seem to be able to adjust is the port. I know that the modbus always looks on port 502 as this is part of the protocol. However is it so on the HMI. Any assistance greatly appreceiated.
Gambit Posted June 3, 2008 Report Posted June 3, 2008 I've attached some I/O via modbus TCP/IP to a terminal this worked fine. So it must use port 502. I would start with just reading one holding register to see if that communication works. Also create an Macro EVENT for pinging the modbus slave to see if you can reach it at all
Gambit Posted June 4, 2008 Report Posted June 4, 2008 (edited) Modicon modbus master Edited June 4, 2008 by Gambit
pirate Posted August 9, 2008 Author Report Posted August 9, 2008 OK so I spent some time trying to figure out for myself how to write a macro to ping the other address. However despite the fact that there are some clues in the mitsi literature I am still stuffed. I have tried various configurations and to no avail. Now normally with a bit of literature and a pointer in the right direction I am usually able to solve most of my plc problems but it seems that between Mitsi and beijer they are trying to keep this secret. Can anyone assist I would like some additional literature on the HMI programming etc. Or someone just show me how to write the PING Macro. Anything would be of great help. Many Thanks
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