GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual
(Version 1.60, May/2017)
PAGE: 9
Pin
Name
Description
1
-
N/A
2
-
N/A
3
B
Non-inverting Bus Line
4
ISODE
Isolated DE output for use in PROFIBUS
applications where the state of the isolated drive
enable node needs to be monitored.
5
GND
Power supply ground for the first node and the last
node
6
VP
+5V Power Supply for the first node and the last
node
7
-
N/A
8
A
Inverting Bus Line
9
-
N/A
2.3 Wiring and Jumper Setting Instructions
The GW-7552-B / GW-7552-M module supports PROFIBUS to Serial Port
communication. It is recommended to use only one serial port (RS232, RS485 or
RS422) of the Gateway at the same time. The following section describes the
necessary steps to be taken to connect one of the three COM port types to a
Modbus network.
2.3.1 RS-232 connection
The RS-232 port of the GW-7552-B / GW-7552-M has got three pins. The
wiring of the RS-232 device with the RS232 port of the GW-7552-B / GW-
7552-M is shown in
figure 4
.
Figure 4 RS-232 wiring diagram
GW-7552-B/GW-7552-M
RS-232 COM port
RS-232 device