Horner APG RX371 OCS HERX371C101 - Manual (Page 26)

CH.5 MAN0924-01-EN
February 8, 2010 Page 26 of 124 # 1018
Signals are labeled for connection to a DTE device
Figure 5.2: MJ Serial Port Connectors
Table 5.2 – – MJ2 Serial Port Pin Assignments
Pin Signal Signal Description Direction
1 RX+ RS-485 Receive Positive In
2 RX − RS-485 Receive Negative In
3 TX+ RS-485 Transmit Positive Out
4 TX − RS-485 Transmit Negative Out
5 +5* +5 VDC 60mA max Out
6 0V Ground −
7 TD 1 RS-232 Transmit Data In
8 RD 1 RS-232 Receive Data Out
MJ2 Pinouts in Full and Half Duplex Modes
* +5Vdc 60mA Max
Pin MJ2 Pins
Signal Direction
8 TXD OUT
7 RXD IN
6 0 V Ground
5* +5 60mA OUT
4 TX- OUT
3 TX+ OUT
2 RX- IN
1 RX+ IN
1
8
MJ2 Full Duplex Mode
MJ2 Half Duplex Mode
Pin MJ2 Pins
Signal Direction
8 TXD OUT
7 RXD IN
6 0 V Ground
5* +5 60mA OUT
4 TX- OUT
3 TX+ OUT
2 TX-/RX- IN/OUT
1 TX+/RX+ IN/OUT
1
8
* +5Vdc 60mA Max