Serial Port

The 15-pin D-connector provides the connection to an

RS-485 compatible serial port on the CPU (see Figure 3).

This port provides a serial connection to a Work Station

Interface board installed in the programming computer.

The serial connection can also be made from the serial

port on the CPU to the serial port on the programming

computer, or other serial device, through the

RS-422/RS-485 to RS-232 Converter (IC690ACC900) or

RS-232 to RS-422 Miniconverter (IC690ACC901).  This

connection can be made with available cables or you

may build cables to fit the needs of your particular

application.  See reference 3  for more information on

serial communications.

For more detailed information on configuration of TMR

systems and communications between PLCs in the

system, refer to the Modular Redundancy Flexible Triple

Modular Redundant (TMR) System User’s Manual.