Omron G9SP Series

3-4
Siemens PLC Settings
Set serial port 1 as given below in the Ladder using the STEP 7-Micro/WIN.
Parameter Description Set value for this
example
Freeport
Control
Registers
Control Freeport
communication for
serial port
Please set SMB130 to $49.
SMB130 Bit Format
MSB LSB
7 6 5 4 3 2 1 0
P D B M
P:Parity(0 1=Even parity)
D:Data bits(0=8 data bits per character)
B:Baud rate(0 1 0=9600bps)
M:Protocol(0 1=Freeport protocol)
Communications cable
The suited cable is different according to the combination of component. Please use the
RS-232/PPI Multi-Master cable when connecting with RS-232C port of a Siemens Standard
PLC.
G9SP-series
RS-232C Serial Communications
Board
Siemens S7-200-series
RS-232 port
Connector Signal Pin No. Pin No. Signal Connector
FG 1 1 CD
SD 2 2 RD
RD 3 3 SD
RS 4 4 ER
CS 5 5 SG
5V 6 6 DR
DR 7 7 RS
ER 8 8 CS
D-Sub
male
9-pin
SG 9 9 RI
D-Sub
male
9-pin