A
Hi,
I've got a CP 341, and I need to communicate to a slave PLC through the CP 341 as a master using Modbus protocol. The problem is that the slave PLC has a 4-wire full duplex RS-485 interface, and in the S7 hardware configuration the CP 341 is designated as having two operating modes:
1. full-duplex (RS 422) four-wire operation.
2. half-duplex (RS 485) two-wire operation.
How can I communicate to the slave PLC? Anyone have any idea?
Cheers,
A. Yousef
I've got a CP 341, and I need to communicate to a slave PLC through the CP 341 as a master using Modbus protocol. The problem is that the slave PLC has a 4-wire full duplex RS-485 interface, and in the S7 hardware configuration the CP 341 is designated as having two operating modes:
1. full-duplex (RS 422) four-wire operation.
2. half-duplex (RS 485) two-wire operation.
How can I communicate to the slave PLC? Anyone have any idea?
Cheers,
A. Yousef