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2.1.1 RS-232 & RS-485 & Power supply interface
The GW-7433D provides one RS-232 interface and one RS-485
interface. The GND-signal of COM1 is shared with pin-9, GND. The pin
assignment is shown in table 2-1.
Figure 2.2 Pin assignments (power side)
Pin
Name
1
CTS1
2
RTS1
3
RXD1
4
TXD1
5
INIT*
6
D2+
7
D2-
8
Vs+
9
GND
Table 2-1: COM Connector Pin Assignment
GW-7433D MODBUS TCP/RTU to CANopen Gateway User Manual
(Version 2.1.0, Aug/2019)
Description
CTS of COM1 (RS-232)
RTS of COM1 (RS-232)
RXD of COM1 (RS-232)
TXD of COM1 (RS-232)
Pin for enable/disable auto execution
firmware
Data+ of COM2 (RS-485)
Data- of COM2 (RS-485)
V+ of power supply (+10V to +30V
unregulated)
Ground of power supply
DC
13
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