Siemens KDN Series Especificaciones Pagina 4

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1 Serial Communication Pin definition
MT5000/4000 Series HMI and PLC connecting guide
1 Serial Communication Pin definition
Serial port COM0
COM0 is a 9-pin D-Sub male port, this port supports RS-232C/RS-485/RS-422A communication, the pin
definition as follows
1
5
6
9
Pin Signal
Function
RS-232C RS-485 RS-422A
1 RX-(B) -- RS485B Receive data
2 RXD Receive data -- --
3 TXD Transmit data
-- --
4 TX- -- -- Transmit data
5
SG
Signal ground
6
RX+(A)
--
RS485A
Receive data
7 NC -- -- --
8 NC -- -- --
9 TX+ -- -- Transmit data
Serial port COM1
COM1 is a 9-pin D-Sub female port, this port supports RS-232C/RS-485/RS-422A communication, and the
pin definition as follows:
5
1
9
6
Pin Signal
Function
RS-232C RS-485 RS-422A
1 RX-(B) -- RS485B Receive data
2 RXD Receive data -- --
3
TXD
Transmit data
--
--
4 TX- -- -- Transmit data
5
SG
Signal ground
6
RX+(A)
--
RS485A
Receive data
7 CTS Clear transmit -- --
8
RTS Request
transmit
-- --
9
TX+
--
--
Transmit data
Serial port COM2
The COM2 and COM0 use the same physical port, the 9-pin D-Sub male port. This COM port supports the
RS232 communication only. The pin definition as follows:
1
5
6
9
Pin Signal
Function
RS-232C
1 NC --
2 NC --
3 NC --
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