Installation
16
07/09 MN03407002Z-EN
Connecting MODBUS RTU
The MODBUS RTU gateway SWIRE-GW-MB transfers data
through the two communication standards RS232 and
RS485. The pin assignment of the 9-pin D-sub plug for
connection to the MODBUS RTU gateway’s 9-pin D-sub
socket must correspond with the communication standard
used.
Data transfer with RS232
If you are using the RS232 communication standard, pins 2,
3 and 5 of the gateway’s D-sub socket are used for data
transfer.
Pin assignment of the gateway’s port for RS232
Figure 10: Pin assignment RS232
h
Caution!
RS232 should be used only for point-to-point connections
between the SWIRE-GW-MB and a PLC or PC.
h
Caution!
For communication through RS232 use only pins 2, 3 and
5!
Using preassembled data cables that use pins 6, 8 and 9
can damage the SWIRE-GW-MB or the other connected
device.
2
3
5
RxD o
u
t
TxD
i
n
GND
2
3
5
6
7
8
9
2
3
4
5
1
6
7
8
9
2
3
4
5
1
Summary of Contents for SWIRE-GW-MB
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