Owner manual

PPC-37xx-N270 Panel PC
Page 49
Figure 4-19: COM 2 Function Select Jumper Location
4.12.6.1 COM2 RS-422 and RS-485 Pinouts
The pinouts for RS-422 and RS-485 operation of external serial port COM 2 are detailed
below.
COM 2 RS-422 Description
Pin 1 TX-
Pin 2 TX+
Pin 6 RX-
Pin 7 RX+
Table 4-7: RS-422 Pinouts
COM 2 RS-485 Description
Pin 1 Data-
Pin 2 Data+
Table 4-8: RS-485 Pinouts