Pixsys TD240 series, Operation Manual, Page: 17 / 92

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5.5.2.2.2 Cable of EXP1 comm. in RS485 for PL250/PL260/
PL300
For communication with other Pixsys devices (PL250-XXAD and
PL300-XXAD) an (optional) cable is available that connects port
EXP1 in RS485 from connector DB9 of the terminal to port COM1
on PLUG of the PLC.
5.5.3 COM2 on DB9 connector
The communication port COM2 is available in the 9-pin connector,
interface RS232 (protocol MODBUS SLAVE, format 8,N,1, baud
rate selectable).
Usually this is the communications port used for
programming the terminal through a PC (see Chapter 4).
5.5.3.1 Interface RS232
PIN 5 GND
PIN 3 TX - RS232
PIN 2 RX - RS232
DB9 FE