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2.
COM1 Ring/+5V/+12V selection jumper (6-pin COM1_V1)
MIX-Q370D1
MIX-Q370D1 COM1 Ring/+5V/+12V Selection
Setting
+12V
+5V
Ring (Default)
3.
COM1 operating mode selection jumpers (2-pin J1/J2/J3/J4)
MIX-Q370D1
MIX-Q370D1 COM1 operating mode selection
(J1、J2、J3、J4)
Setting
RS232
RS485/RS422 with terminator
Chapter 2: Motherboard information
COM1_V1
+12V
+5V
Pins
1-2
3-4
5-6
J1、J2、J3、J4
RS232 (Default)
Pins
Open jumpers J1, J2, J3 and J4
(Default)
Short-circuit jumpers J1, J2, J3
and J4
Ring
(Default)
RS485/RS422
with terminator
2-13
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