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2.3.1.2
Isolation COM connector (supports Isolation version)
ARK-5261 Isolation version provides four RS-422/485 isolation serial communication
interface ports, transferred from DB37 connector to the DB9 connector.
Table 2.3: Isolation COM Connector Pin Assignments
Pin 1
NC
Pin 2
COM 1_422/485 TX-
Pin 3
COM1_GND
Pin 4
NC
Pin 5
COM 1_422/485 TX+
Pin 6
NC
Pin 7
COM 2_422RX-
Pin 8
NC
Pin 9
NC
Pin 10
COM 2_422RX+
Pin 11
COM 3_422/485 TX-
Pin 12
COM 3_GND
Pin 13
NC
Pin 14
COM 3_422/485 TX-
Pin 15
NC
Pin 16
COM 4_422RX-
Pin 17
NC
Pin 18
NC
Pin 19
COM 4_422RX+
Pin 20
NC
Pin 21
COM 1_422RX-
Pin 22
NC
Pin 23
NC
Pin 24
COM 1_422RX+
Pin 25
COM 2_422/485 TX-
Pin 26
COM2_GND
Pin 27
NC
Pin 28
COM 2_422/485 TX+
Pin 29
NC
Pin 30
COM 3_422RX-
Pin 31
NC
Pin 32
NC
Pin 33
COM 3_422RX-
Pin 34
COM 4_422/485 TX-
Pin 35
COM4_GND
Pin 36
NC
Pin 37
COM 4_422/485 TX+
13
ARK-5261 User Manual
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