Maple Systems PC419C - Manual (Page 37)

Page 25 1010-1023, Rev 00
Figure 3-1: COM1 to COM5 Pin 9 Setting Jumper Locations
3.6.4 COM5 RS-232/422/485 Serial Port Selection Jumper
Jumper Label: JP2
Jumper Type: 4-pin header
Jumper Settings: See Table 3-4
Jumper Location: See Figure 3-2
The COM5 RS-232/422/485 Serial Port Selection jumper sets the communication protocol
used by the COM5 serial communications port as RS-232, RS-422 or RS-485. The COM5
RS-232/422/485 Serial Port Selection settings are shown in
555 H
Table 3-4.
COM5 Mode Pin 1-2 Pin 3-4
RS-232 (Default) Short Open
RS-422 Short Short
RS-485 (Default: RX) Open Short