1 com3 rs-422 and rs-485 pinouts, Table 3-8: rs-422 pinouts – IEI Integration POC-17i_19i-Series_IEI User Manual
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POC-17i/19i Series
Page 26
Short 5-6
RS-422/485
Short 8-9
RS-422/485
Short 11-12
RS-422/485
Table 3-7: COM3 RS-232/422/485 Serial Port Select Jumper Settings
The COM3 RS-232/422/485 Serial Port Select jumper location is shown in Figure 3-7.
Figure 3-7: COM3 RS-232/422/485 Serial Port Select Jumper Location
3.6.6.1 COM3 RS-422 and RS-485 Pinouts
The pinouts for RS-422 and RS-485 operation of external serial port COM 3 are detailed
below.
COM 3
RS-422 Description
Pin 1
TX-
Pin 2
TX+
Pin 6
RX-
Pin 7
RX+
Table 3-8: RS-422 Pinouts
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