19
Pin
Designations
Field Bus O
Pin assignment of the 9-pin female, D-SUB, MPI.
Pin #
Symbol
RS-485
Description
1
2
3
RXD/TXD_P
B/B’
Receiving / Sending data_P
4
5
DGND
C/C’
Signal ground
6
7
8
RXD/TXD_N
A/A’
Receiving / Sending data_N
9
RTS
Control Signal
Note:
MPI_RTS connect with the pin-9 of the SIEMENS_PLC terminal
2.3.8
USB HOST Interface
Connection
Connect with USB interface devices or U disks
Port Function
This interface can be connected with USB keyboard, mouse and printers, and
the U disk can be used for user
‟s configuration uploading/ downloading as well
as data storage.
Port Diagram
2.3.9
Audio Interface
Connection
Standard 3.5mm Audio Output Interface
Port Function
Audio Files are added in the configuration in advanced, the audio signal will
produced when specific events occurred.
Port Diagram
2.3.10 SD
Card’s Extended Interface
Connection
Standard SD card interface
Port Function
The SD Card can be inserted in through this interface for Data storage and user
configuration uploading/downloading.
Port Diagram
