Serial Port Connections - Maple Systems HMI5043L Installation Manual

14

Serial Port Connections

The following diagrams indicate the proper pin connections for the serial
ports of the HMI.
Pin#
1
2
3
4
5
6
7
8
9
Note: COM1 [RS-485 2W] and COM3 [RS-485 2W] support the Siemens
MPI 187.5K multi-point interface. However, only one COM port can be used
with the Siemens MPI interface at a time.
1010-1018 Rev 10
Serial Port Pinouts
COM1
Pin#
[RS-232] [RS-485 4 wire]
1
2
3
4
5
6 TXD
7
8
9 RXD
HMI5043L, HMI5043LB
DE9S
COM1 COM1
[RS-485 2 wire] [RS-485 4 wire]
DATA- RX-
DATA+ RX+
TX-
TX+
GND (COM1)
HMI5070L, HMI5070LB
DE9P
COM1 COM1
[RS-485 2 wire]
RX- DATA-
RX+ DATA+
TX-
TX+
GND
HMI5043DL
COM3
[RS-485 2 wire]
DATA-
DATA+
GND (COM3)
HMI5100L
HMI5121XL
HMI5150XL
HMI5000L Installation Guide
COM3
[RS-485 2 wire]
DATA-
DATA+
DE9P
COM1
Pin#
[RS-232]
1
2 RXD
3 TXD
4
5 GND
6
7 RTS
8 CTS
9
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