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Chapter 2: Jumpers and Connectors
COM1 Port
Connector type: DB-9 port, 9-pin D-Sub
Connector location: CN10
1
5
6
9
Pin
RS232
1
COM1_DCD
2
COM1_RXD
3
COM1_TXD
4
COM1_DTR
5
COM1_GND
6
COM1_DSR
7
COM1_RTS
8
COM1_CTS
COM1_RI
9
(Could be a +5V
Power Pin)
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RS422
RS485
COM1_TXD-
COM1_TXD-
COM1_RXD-
COM1_TXD+
COM1_TXD+
COM1_RXD+
COM1_RXD+
Reserve
COM1_RXD-
Reserve
COM1_GND
Reserve
COM1_RTS-
Reserve
COM1_RTS+:
Reserve
COM1_CTS+
Reserve
COM1_CTS-
Reserve
(Could be a +5V
(Could be a +5V
Power Pin)
Power Pin)
COM2 Port
Connector type: DB-9 port, 9-pin D-Sub
Connector location: CN12
1
5
6
Pin
RS232
1
COM2_DCD
2
COM2_RXD
3
COM2_TXD
4
COM2_DTR
5
COM2_GND
6
COM2_DSR
7
COM2_RTS
8
COM2_CTS
COM2_RI
9
(Could be a +12V
Power Pin)
23
9
RS422
RS485
COM2_TXD-
COM2_TXD-
COM2_RXD-
COM2_TXD+
COM2_TXD+
COM2_RXD+
COM2_RXD+
Reserve
COM2_RXD-
Reserve
COM2_GND
Reserve
COM2_RTS-
Reserve
COM2_RTS+
Reserve
COM2_CTS+
Reserve
COM2_CTS-
Reserve
(Could be a +12V
(Could be a +12V
Power Pin)
Power Pin)
OPPC 1540HT-J1900/1940HT-J1900 User Manual
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