RAD Data comm ASMi-52 Manual de usuario Pagina 134

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Appendix A Interface Connector Specifications Installation and Operation Manual
A-4 CONTROL Connector ASMi-52 Ver. 2.5
A.2 CONTROL Connector
The control terminal interface terminates in a V.24/RS-232 9-pin D-type female
connector that can be configured as DCE or DTE (see the Selecting the Control
Port Interface section in Chapter 4). Table A-4 lists the CONTROL connector pin
assignments. Table A-5 describes the control signal direction.
Table A-4. 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-5. 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 over ASMi-52 and starts a configuration or monitoring session.
When connecting a dial-out modem to the CONTROL port for the alarm
reporting, a cross cable must be used. Table A-6 provides the pinout of a typical
cross cable with two male DB-9 connectors.
Note
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