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Data Connections

RS-232 port

Commanders are equipped standard with an RJ45 DTE RS-232c serial port. This connector may be

used for direct local access or from other serial devices such as a terminal server. An RJ45 crossover

cable is provided for connection to an RJ45 DCE serial port.

Pin DTE Signal Name Input/Output

1 Request to Send RTS Output

2 Data Terminal Ready DTR Output

3 Transmit Data TD Output

4 Signal Ground

5 Signal Ground

6 Receive Data RD Input

7 Data Set Ready DSR Input

8 Clear to Send CTS Input

RJ45 to DB9F serial port adapter

Additionally, an RJ45 to DB9F serial port adapter is provided for use in conjunction with the RJ45

crossover cable to connect to a PC DB9M DCE serial port. The adapter pinouts below reflect use of the

adapter with the provided RJ45 crossover cable.

Pin DCE Signal Name Input/Output

2 Receive Data RD Output

3 Transmit Data TD Input

4 Data Terminal Ready DTR Input

5 Signal Ground

6 Data Set Ready DSR Output

7 Request to Send RTS Input

8 Clear to Send CTS Output

Modem Port

Commanders are equipped standard with a DB9-male RS-232C DTE Modem serial port. This

connector is typically used to connect to an external modem, but may also be used to connect to any

RS-232C device. A 9-pin female to 25-pin male cable is included for connecting the Commanders to an

external modem.

Pin DTE Signal Name Input/Output

1 Data Carrier Detect DCD Input

2 Receive Data RD Input

3 Transmit Data TD Output

4 Data Terminal Ready DTR Output

5 Signal Ground

6 Data Set Ready DSR Input

7 Request to Send RTS Output

8 Clear to Send CTS Input

NOTE: To connect to a PC serial port, a null-modem adapter and a female-to-female gender changer are required in

addition to the included cable.

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68 • Appendices Sentry Commander - PT40

Installation and Operations Manual

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