Specifications

4 Communication settings and guide of HMI connecting with controller
PC / PPI cable on the baud rate DIP switch settings, you must set the baud rate with the PLC and
PC SET PG / PC Interface match the settings , Siemens S7-200 PLC baud rate can be programmed
via STEP7-Micro/WIN software settings.
RS485 communication
HMI terminal
9pin D-SUB female/male
Controller terminal
9pin D-SUB(male)
1
RX-
6 RX+
5 GND
8 D-
3 D+
5 GND
com
0
/com
1
SIEMENS S7-300/400 (PC Adapter Direct) protocol
RS232 communication
MT5-S7-300 PC Adapter communication cable
Need to add a communication cable in adapter RS232 terminal
HMI teiminal
9pin D
-SUB female
/
male
com
2
3 TX
2 RX
5 GND
8 TX
7 RX
5
GND
com
0/
com
1
SIEMENS PLC
PC Adapter RS
232
terminal
9pin D-SUB(female)
2 RX
3 TX
5 GND
7
RTS
8 CTS
SIEMENS S7-300/400 (MPI Direct) protocol
RS485 communication
8 -
3 +
5 GND
HMI MPI terminal
9pin D-SUB male
3 TXD/RXD+
8 TXD/RXD-
5 GND
Controller MPI terminal
9 pin D-SUB (male)
SIEMENS MPI protocol
RS485-2 communication
HMI terminal
9pin D-SUB female/male
Controller terminal
9pin D-SUB(male)
1 RX-
6 RX+
5 GND
8 D-
3 D+
5 GND
com0/com1
Long distance communication with MPI adapter:
The cable length must be 600m or less in the 187.5k ,the 7 pin and 2 pin must connect with 24V power in
the port of RS485, the 8 pin and 3 pin must connect with 120Ωterminal resistance.
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