Acnodes PC 8177 - Manual (Page 15)

Jumper Setting Description
Power: Set CN15A pin 1 to +5V level 1-3 close
Data: Set CN15A pin 1 to DCD (Default) 3-5 close
ower: Set CN15A pin 9 to +12V level 2-4 close
Data: Set CN15A pin 9 to RI (Default) 4-6 close
Description Jumper Setting
RS-232 mode
(Default)
JP11 3-5, 4-6 close
JP12 1-2 close
JP14 3-5, 4-6 close
RS-422 mode
JP11 1-3, 2-4 close
JP12 3-4 close
JP14 1-3, 2-4 close
RS-485 mode
JP11 1-3, 2-4 close
JP12 5-6 close
JP14 1-3, 2-4 close
2.2 Seria l Ports Interface
The PC8177 has four serial ports. COM1 is RS-232/422/485, while COM2, COM3 and
COM4 are RS-232.
The following table shows you the pin assignments of this connector:
2.2.1 COM1 Data/Pow er Selection (JP10)
The COM1 port has +5V level power capability on DCD and +12V level on RI by setting
this jumper. W hen COM1 is set to +5V or +12V level, please make sure the
communication mode is RS-232 (see section 2.2.2).
JP10
2.2.2 COM1 RS-232/422/485 Mode Setting (JP11, JP12, JP14)
Use these jumpers to set COM1 port to operate as RS-232, RS-422 or RS-485
communication mode.
JP11 JP12 JP14
2.2.3 COM3 Data/Pow er Selection (JP13)
The COM3 port has +5V level power capability on DCD and +12V level on RI by setting
this jum per.
Description Jumper Setting
Power: Set CN13 pin 1 to +5V level 1-3 close
Data: Set CN13 pin 1 to DCD (Default) 3-5 close
Power: Set CN13 pin 8 to +12V level 2-4 close
Data: Set CN13 pin 8 to RI (Default) 4-6 close