INSTALLATIONS
10
MB880 User’s Manual
JP1: COM2 RS232 +5V/+12V Power Setting
JP1
Setting
Function
Pin 1-2
Short/Closed
+12V
Pin 3-4
Short/Closed
Normal
Pin 5-6
Short/Closed
+5V
JP2: COM1 RS232 +5V/+12V Power Setting
JP2
Setting
Function
Pin 1-2
Short/Closed
+12V
Pin 3-4
Short/Closed
Normal
Pin 5-6
Short/Closed
+5V
JP3: RS232/422/485 (COM2) Selection
COM1 is fixed for RS-232 use only.
JP3, COM2 is selectable for RS232, RS-422 and RS-485.
The following table describes the jumper settings for COM2 selection.
COM2
Function
RS-232
RS-422
RS-485
Jumper
Setting
(pin closed)
Short:
1-2
9-11
10-12
15-17
16-18
Short:
3-4
7-9
8-10
13-15
14-16
Short:
5-6
7-9
8-10
13-15
14-16
Summary of Contents for MB880
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