MAC 50 problem

[plcfreak 0]

Hi all The customer called me because the HMI Did not communicate with the PLC Which is connected to The problem showed up after a hardware repair of the HMI.( Power supply) I’tried to upload the project from the HMI But it was not possible So I went to the set up menu in order to check the port settings. The comm driver installed at the HMI is for FX CPU But the RS232 Port is assigned for the Communication I tried to change this setting but it was not possible because these parameters are automatic assigned every time you change the PLC type According to the manual when the FX PLC is selected ,Port RS422 is automatically assigned for communication by default. Does anybody knows how to change the comm settings ? Thanks in advance

[Crossbow 296]

That gets set in the project. You should not have to change it.

[plcfreak 0]

Thanks for your reply The problem is that my PC Has no RS422 Port and the PLC has not RS232 Port

[Crossbow 296]

The project should set the RS422 port for the FX driver, since FX serial port is RS422, and the unit's RS232 port should be set for communication to the laptop. I fail to see how your comment about PLC not having RS232 and PC not having RS422 is relevant. You don't use RS422 for PC connection, and you clearly are not using the RS232 to connect to the PLC. These settings are made in the project file in MTA-WIN before download to the screen.

[djtron 0]

Hi, if you enter the setup you must select port parameters and then PLC. The cursor will be placed on RSnnn. You can change this by pushing the blue i button. (it will change between RS232 and RS422).