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ASMi-52L Installation and Operation Manual Appendix A Interface Connector Specifications

CONTROL Connector A-3

A.2 CONTROL Connector

The control terminal interface terminates in a V.24/RS-232 9-pin D-type female

connector, which can be configured as DCE or DTE (see the Selecting the Control

Port Interface section in Chapter 4). Table A-3 lists the CONTROL connector pin

assignments. Table A-4 describes the control signal direction.

Table A-3. CONTROL Connector Pinout

Pin Function

1 Data Carrier Detect (DCD)

2 Receive Data (RD)

3 Transmit Data (TD)

4 Data Terminal Ready (DTR)

5 Ground (GND)

6 Data Set Ready (DSR)

7 Request To Send (RTS)

8 Clear To Send (CTS)

9 Ring Indicator (RI)

Table A-4. CONTROL Connector Signal Direction

Interface Type

Control Signal

DCE DTE

CTS Out Not Used

DCD Out Out

DSR Out Out

DTR In In

RI Not Used In

RTS In In

• When connected and turned on, the terminal sets the DTR line ON (active) to

gain control of the ASMi-52L and starts a configuration or monitoring session.

• In DTE mode, the DSR signal follows the RI signal

• In DCE mode, the DSR signal follows the DTR signal

When connecting a dial-out modem to the CONTROL port for the alarm

reporting, a cross cable must be used. Table A-5 pinout of a typical cross cable

with two male DB-9 connectors.

Note

1 2 ... 88 89 90 91 92 93 94 95 96 97 98 ... 103 104

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RAD Data comm ASMi-52L Spécifications Page 93