Com2 (Data) Connections - GE MDS SD Series Technical Manual

Pin Descriptions—
RS-232 and RS-485
MDS 05-4846A01, Rev. H
Figure 19. COM1 Wiring for PC Management
Table 7. COM1 Pin Descriptions
Pin Radio
Number Input/ Pin Description
Output
1 -- No function
2 OUT RXD (Received Data)—Supplies received data to the
connected device.
3 IN TXD (Transmitted Data)—Accepts TX data from the
connected device.
4 -- No function
5 -- Ground—Connects to ground (negative supply potential) on
chassis.
6 -- No function
7 -- No function in most applications—User I/O for special
applications
8 --- No function
9 -- No function in most applications—User I/O for special
applications

COM2 (Data) Connections

Typically, the port (Figure 20) is used for connecting the radio to
COM2
an external DTE serial device supporting the RS-232 or RS-485 serial
data format. The radio supports serial data rates of 300, 1200, 2400,
4800, 9600, 19200, 38400, 57600, and 115200 bps (asynchronous only).
Table 8 and Table 9 provide detailed pin descriptions for the
port in RS-232 mode and RS-485 modes, respectively.
NOTE: In addition to RS-485 mode, the radio is capable of operating
in RS-422 mode. RS-485 must be selected in the menu, and the
pin descriptions/wiring arrangements shown in Table 9 apply.
5 1
9 6
NOTE: The radio is hard-wired as a DCE device.
SD Series Technical Manual
Figure 20. COM2 Connector (DB-9F)
As viewed from outside the radio
data
COM2
25