Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
Chapter 7 - Console Mode
SNMP Access Gateway User’s Manual - v1.0 -- 11/99 - Page 24
Chapter 7 - Console Mode
Wh
en the serial I/O ports are in console mode, characters which are received on one serial I/O port are sent out the
other serial I/O port. This allows the SNMP Access Gateway to be placed in-line between two piece of equipment
(such as a control console and a piece of equipment, hence the console mode name), and monitor the data flow
between the devices for alarm conditions.
Console mode is enabled and disabled via the menus of the SETUP command, or by SNMP. By default console
mode is not enabled.
When data is received from a serial I/O port while in console mode, the data is processed by the alarm evaluator as
well as being passed to the other serial I/O port. Thus, the alarm evaluator can analyze the data flow from both serial
I/O ports and log alarm events while simultaneously passing the data between the two serial I/O ports.
When a user attempts to establish a pass-through access to one of the serial I/O ports when the I/O ports are in
console mode, the pass-through connection is allowed, as a joined connection. In this case characters which are
received on the network connection are passed to the selected serial I/O port, and characters which are received on
either of the serial I/O ports are passed to the network connection, in addition to being passed to the other serial I/O
port. Thus, pass-through mode may be used to monitor the activities in console mode, and also provide the user with
access to the equipment being controlled by the console. However, the characters received from the network
connection are not processed by the alarm evaluator, so that they do not generate any alarm events.
To Next Page
Loading...