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GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual
(Version 1.60, May/2017)
PAGE: 8
Figure 3
Pin assignment of GW-7552-B / GW-7552-M
Table 3 14-pin screw terminal block
Pin
Name
Description
1
D+
Data+ of RS-485
2
D-
Data- of RS-485
3
-
N/A
4
TX+
Transmit Data+ of RS-422
5
TX-
Transmit Data- of RS-422
6
RX+
Receive Data+ of RS-422
7
RX-
Receive Data- of RS-422
8
-
N/A
9
RX
Receive Data of RS-232
10
TX
Transmit Data of RS-232
11
GND
GND of RS-232
12
-
N/A
13
+VS
V+ of Power 10 to +30VDC)
14
GND
GND of Power Supply
Table 4 PROFIBUS DB9 Female Connector