IEI Technology AFL-17D, User Manual

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AFL-W19A/W19B/17D/W15A-GM45 Panel PC
Page 20
Pin Description
5-6 5 V
Table 2-4: COM3 Pin-9 Setup
2.5.3 COM3 RS-232/422/485 Setup
Jumper Label: J3 and J4
Jumper Type:
8-pin and 12-pin headers
Jumper Settings:
See
5
Table 2-5 and
5
Table 2-6
This serial port can be set to use RS-232, RS-422 or RS-485 communication methods.
Set all the jumpers to the same settings.
J3 Description
1-2 According to BIOS settings
3-4 RS-232
5-6 RS-422
7-8 RS-485
Table 2-5: COM3 RS-232/422/485 Setup
J4 Description
1-2, 4-5, 7-8, 10-11 RS-232
2-3, 5-6, 8-9, 11-12 RS-422/485
Table 2-6: COM3 RS-232/422/485 Setup
The pinouts for RS-232, RS-422 and RS-485 communication are shown below.
Pin RS-232 Desc. RS-422 Desc. RS-485 Desc.
1 DCD TX- D-
2 RX TX+ D+
3 TX
4 DTR
5 GND
6 DSR RX-