P1177E-842
User’s Manual
Hardware and Installation
27
2.11.4 COM1 RS-232/422/485 Mode Select (JP5, JP6, JP7)
Use these jumpers (3x2-pin p=2.54mm) to set COM1 port to operate as RS-232, RS-422 or
RS-485 communication mode.
2.11.5 COM2 RS-232/422/485 Mode Select (JP8, JP9, JP10)
Use these jumpers (3x2-pin p=2.54mm) to set COM2 port to operate as RS-232, RS-422 or
RS-485 communication mode.
2.11.6 COM3 Data/Power Select (JP11)
The COM3 port has +5V/+12V power capability on DCD and +5V/+12V on RI by setting this
5x2-pin p=2.54mm jumper.
Function
Setting
RS-232 mode
(Default)
JP5 1-2 close
JP6 3-5, 4-6 close
JP7 3-5, 4-6 close
RS-422 mode
JP5 3-4 close
JP6 1-3, 2-4 close
JP7 1-3, 2-4 close
RS-485 mode
JP5 5-6 close
JP6 1-3, 2-4 close
Function
Setting
RS-232 mode
(Default)
JP8 1-2 close
JP9 3-5, 4-6 close
JP10 3-5, 4-6 close
RS-422 mode
JP8 3-4 close
JP9 1-3, 2-4 close
JP10 1-3, 2-4 close
RS-485 mode
JP8 5-6 close
JP9 1-3, 2-4 close
Function
Setting
Power: Set COM3 pin 1 to +12V level
1-3 close
Power: Set COM3 pin 1 to +5V level
3-5 close
Data: Set COM3 pin 1 to DCD# (Default)
7-9 close
Power: Set COM3 pin 8 to +12V level
2-4 close
Power: Set COM3 pin 8 to +5V level
4-6 close
Data: Set COM3 pin 8 to RI# (Default)
9-10 close
Содержание P1177E-842
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