User`s manual

Chapter 2 Hardware Configuration
Prox-1750 USER'S MANUAL
Page: 2-9
2-5. RS232/422/485 (COM2) SELECTION
JP3 : RS-232/422/485 Selection
COM1, COM3, & COM4 is fixed for RS-232 function only.
COM2 is selectable for RS-232, 422, 485 function.
The jumper settings are as follows :
COM 2
Function
Jumper Setting
(pin closed)
Jumper
Illustration
RS-232
Open
RS-422
1-2, 5-6, 7-8, 9-10
11-12,13-14,15-16
17-18, 19-20
RS-485
1-3, 4-6, 7-8, 9-10
11-12,13-14,15-16
17-18, 19-20
*** Manufactory default --- RS-232.