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Ethernet interface RJ45 socket signal array
Pin Signal name Function Type
1 Tx+ Positive phase Ethernet data sending
differential signal line
Output
2 Tx- negative phase Ethernet data sending
differential signal line
Output
3 Rx+ Positive phase Ethernet data receiving
differential signal line
Input
4 Not used -
5 Not used -
6 Rx- Negative phase Ethernet data receiving
differential signal line
Input
7 Not used -
8 Not used -
Default Button: Restore the default setted parameters. Insert the penpoint into the hole to press the
button for about 1 second, the internal Flash memory parameters will restore to factory default
parameters: IP = 192.168.0.250, Username = admin, Password = admin. When you forget the IP
address,user name or password, you can restore to the factory default parameters,and then reset
the parameters.
DP/MPI interface:
DP/MPI interface is the DB9M-pin plug which meets the Siemens PROFIBUS
and MPI
interface technical specifications, the signal array match S7-300/400PLC interface, and
has a 0.5 meter cable, you just simply plug the
DB9M of ETH Adapter CN directly into the
S7-300/400PLC MPI or PROFIBUS interface outlet.
DP/MPI plug（DB9M pin）signal array
PIN Signal
name
Description Input/Output
1 NC No use -
2 M24V 24VDC power negative Input
3 LTG_B RS485 signal positive Input/Output
4 RTS_AS RTSAS control signal ,when it has data receiving,the
signal is “1”.
Input
5 M5V RS485 signal ground and
5VDC power ground
Input
6 P5V No use -
7 P24V 24VDC power positive Input
8 LTG_A RS485 signal negative Input/Output
9 RTS_PG The adapter RTS output signal,when the adapter is
sending signal,the signal is “1”,this signal is not
connected to MPI extension cable.
Output
Shell Shielding Shield ground (chassis ground)
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