B&B Electronics GW-7433D - Manual - Manual (Page 13)

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 Description
1 CTS1 CTS of COM1 (RS-232)
2 RTS1 RTS of COM1 (RS-232)
3 RXD1 RXD of COM1 (RS-232)
4 TXD1 TXD of COM1 (RS-232)
5 INIT* Pin for enable/disable auto execution
firmware
6 D2+ Data+ of COM2 (RS-485)
7 D2- Data- of COM2 (RS-485)
8 Vs+ V+ of power supply (+10V to +30V
DC
unregulated)
9 GND Ground of power supply
Table 2-1: COM Connector Pin Assignment
GW-7433D MODBUS TCP/RTU to CANopen Gateway User Manual 13
(Version 2.0.0, Jul/2011)