Kepserver is not bad.
Kepserver and plc
1 Create Channel Click Add Channel.
Device driver: modbus serial
Communication: It must be the same as the setting when connecting for 200 hours. Parity is generally non-existent, which is not acceptable.
2 Set up devices Click to add devices.
Id: the device id must be consistent with the PLC address.
Block size: register: the number read, which is generally set to 120.
3 Create variables and click Add Static Label.
Label attribute: name: variable name custom address: variable address according to PLC address: such as: 40000 1 data type: data type: consistent with PLC, and the other: using word for int.
Wincc and kepserver
1 tag management: adddriver: select opc to add opc driver.
2opc:opc groups right-click system parameters: local-kepserver-browse server-next-... variables are imported into wincc.
Enter WINCC graphic editor, right point control, configuration dialog box, marker icon, select opc, and then select variables.
In this way, the variables of PLC are linked with wincc, and then the next virtual serial port can have more than one area.