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Data Connections

RS-232 port

Smart CDUs 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

LED Indicators

Input/Branch/Phase Current

Units are equipped with 7-segment LEDs for reporting of input, branch or phase current loading.

Loading is reported in amperes and is displayed in ½ amp increments under 10A and whole amp

increments at and above 10A. Additionally, the LED may display codes for events detected by the

system for immediate local notification.

Code Event description

FE Sentry has detected a removed/blown fuse

67543218

12345

6789

Smart Cabinet Distribution Unit Appendices • 87

Installation and Operations Manual

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Server Technology PT40 Manual de instalación Pagina 87