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NISE 4000P4E User Manual
Chapter 2: Jumpers and Connectors
Connector Pin Definitions
External I/O Interfaces - Front Panel
COM1 and COM2 Ports
Connector type: 2x10 20-pin terminal block
Connector location: J1
110
1120
RS232 RS422 RS485
Pin Definition Pin Definition Pin Definition
11 SP2_DCD 1 SP2_DATA- 1 SP2_TX-
12 SP2_RXD 2 SP2_DATA+ 2 SP2_TX+
13 SP2_TXD 3 NA 3 SP2_RX+
14 SP2_DTR 4 NA 4 SP2_RX-
15 GND 5 GND 5 GND
16 SP2_DSR 6 NA 6 NA
17 SP2_RTS 7 NA 7 NA
18 SP2_CTS 8 NA 8 NA
19 SP2_RI 9 NA 9 NA
20 GND
RS232 RS422 RS485
Pin Definition Pin Definition Pin Definition
1 SP1_DCD 1 SP1_DATA- 1 SP1_TX-
2 SP1_RXD 2 SP1_DATA+ 2 SP1_TX+
3 SP1_TXD 3 NA 3 SP1_RX+
4 SP1_DTR 4 NA 4 SP1_RX-
5 GND 5 GND 5 GND
6 SP1_DSR 6 NA 6 NA
7 SP1_RTS 7 NA 7 NA
8 SP1_CTS 8 NA 8 NA
9 SP1_RI 9 NA 9 NA
10 GND
COM1 Connector Pin Definition COM2 Connector Pin Definition
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