2 485 pass-through – db-9f connector, 3 remote control connector – db-9m connector – Mocomtech CRS-300 User Manual
Page 170
CRS-300 1:10 Redundancy Switch
Revision 16
Connector Pinouts
MN/CRS300.IOM
6–2
6.1.2
485 Pass-Through – DB-9F Connector
Table 6-1 indicates the pinout for the DB-9F 485 Pass-Through connector,
used only with the CDM-Qx/QxL modems.
Table 6-1. 485 Pass-Through User Data Connector
Pin
Description
Direction
1 Ground
2
EIA-232 Transmit Data
Out
3
EIA-232 Receive Data
In
4
Reserved - do not connect to this pin
5 Ground
6
EIA-485 Receive Data B (see note)
In
7
EIA-485 Receive Data A (see note)
In
8
EIA-485 Transmit Data B
Out
9
EIA-485 Transmit Data A
Out
Note: Use for 2-wire EIA-485 operation.
6.1.3
Remote Control Connector – DB-9M Connector
The DB-9M Remote Control connector provides access to the remote
control ports of the Switch, both EIA-232 and EIA-485. Table 6-2
provides the pinout information.
Table 6-2. Remote Control Connector
Pin
Description
Direction
1 Ground
2
EIA-232 Transmit Data
Out
3
EIA-232 Receive Data
In
4
Reserved - do not connect to this pin
5 Ground
6
EIA-485 Receive Data B (see note)
In
7
EIA-485 Receive Data A (see note)
In
8
EIA-485 Transmit Data B
Out
9
EIA-485 Transmit Data A
Out
Note: Use for 2-wire EIA-485 operation.