Maple Systems HMI5000 Series - Manual (Page 16)

16 HMI5000 Series Installation Guide
1010-1005 Rev 05 www.maplesystems.com
This diagram illustrates the proper pin connections for the HMI5043N/T
serial port:
Figure 8: HMI5043N/T Serial Port Pin outs
DE9P
Pin#
COM1
(RS-485 2 wire)
COM1
(RS-485 4 wire)
COM1
(RS-232)
COM3
(RS-485 2 wire)
1 TX/RX – RX –
2 TX/RX+ RX+
3 TX –
4 TX+
5 Signal Ground
6 TXD
7 TX/RX –
8 TX/RX+
9 RXD
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