RAD Data comm Managing ASMi-52 via a Terminal Port, Control Port Interface Characteristics

Installation and Operation Manual Chapter 3 Operation

•Remote management via out-of-band 10/100BaseT port or dedicated timeslot. Remote management is performed using Telnet, or ConfiguRAD (RAD’s Web-based application), or RADview (RAD’s SNMP-based management system).

Managing ASMi-52 via a Terminal Port

This section describes how to prepare ASMi-52 and the supervisory terminal for a control session.

Control Port Interface Characteristics

ASMi-52 includes a V.24 (RS-232) asynchronous DCE port, designated as CONTROL and terminating in a 9-pin D-type female connector. The control port continuously monitors the incoming data stream and immediately responds to any input string received through this port.

The terminal can be connected either directly to the ASMi-52 control port, or through a modem or any other type of full-duplex data link. The ASMi-52 control port interface type must be set in accordance with the connection method, as follows:

•DCE – direct connection to terminals. Since terminals usually have DTE interfaces, the connection to the port is made by means of a cable.

•DTE – connection through a modem or data link. In this case, you need a cross-cable (also called a null modem cable) to connect to the CONTROL connector.

The ASMi-52 control port can be configured to communicate at the following rates: 9.6, 19.2, 38.4, 57.6, or 115.2 kbps.

The word format consists of one stop bit, 8 data bits, and no parity.

Note ASMi-52 can also be managed via a hand-held control device, Easy Config. Refer to Appendix C for detailed description of the device.

Preparing the Terminal

Any standard ASCII terminal (a “dumb” terminal or a personal computer running a terminal emulation application) equipped with a V.24 (RS-232) communication interface can be used to configure ASMi-52. Appendix A details the pin assignments and control signal directions of the ASMi-52 control connector.

Data Terminal Ready (DTR)

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.

Initiating a Control Session

To initiate a control session:

1.Connect the terminal cable to the CONTROL connector of ASMi-52.

2.Turn the control terminal on.

ASMi-52 Ver. 2.5 Configuration Alternatives 3-7