2.5 RS232 Port Wiring
The RS232 port is used for configuring the unit. A straight-through serial cable with a DB-9
connector is required. There is no need to crossover the Transmit and Receive signals from the PC
side since this has been done internally as shown in the figure below.
Fig 2.5.1 RS232 Female DCE pin-out
Pin Signal
1 No Connection
2 Transmit Data
3 Receive Data
4 No Connection
5 Ground
6 No Connection
7 No Connection
8 No Connection
9 No Connection
Table 2.5.1 RS232 Female DCE pin-out
NOTE: This port is not intended to be a permanent connection and the cable shall be less than 2m
(6.5 ft) in length.
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