RuggedCom RS900GP manual Failsafe Output Wiring and Specifications, 2.5. RS232 Port Wiring

2. Installation

2.4. Failsafe Output Wiring and Specifications

The “Failsafe” output relay is provided to signal critical error conditions that may occur on the RS900GP. The contacts are energized upon power up of the unit and remain energized until an alarm condition or power loss occurs.

Figure 2.7. Failsafe Output Relay

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.

Figure 2.8. RS232 Female Connector

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 2.1. RS232 Female DCE Pinout

This port is not intended to be a permanent connection and the cable shall be less than 2m (6.5 ft) in length.

RuggedCom® RuggedSwitch™ 15 RS900GP Installation Guide Rev 100