Quantum and Evolution Series Installation and Operating Handbook
7-131
Edit-Unit-Interface-ESC Interface Screen
Options:
RS232
RS422
RS485
IP
RS485-Local
RS485-Remote
IP to Serial
Factory default:
RS485
Description:
Specifies which of the modem’s physical interfaces is to be connected
through to the satellite ESC channel. Note RS485 is not available on the
IDR card.
In the case of RS232, RS422 and RS485, the relevant physical interface
(on the Async ESC port) is directly connected through to the ESC
channel and the data is therefore passed transparently, i.e. whatever is
passed through is what comes out on the equivalent interface on the
remote modem, without being interpreted in any way by either modem.
For example, messages could be passed to control any manufacturer’s
piece of equipment that is listening on an RS485 multidrop bus hanging
off the remote modem.
The IP mode allows IP packets to be sent over the satellite ESC
channel. The ESC channel forms part of an Ethernet bridge and it
therefore learns which IP packets should be sent over the ESC channel.
The IP packets need not be destined for the remote modem – they will
be passed onto the remote Ethernet network if they are addressed to a
device on that network. The IP packets will be interleaved with AUPC
messages when AUPC is switched on. It is even possible to send RS485
M&C messages over the satellite ESC channel at the same time as IP
packets, provided that the M&C messages are prefixed with
ESC
as
described in the document ‘
Remote M&C Specification for Quantum and
Evolution Series Satellite Modems
’.
The
RS485-Local
and
RS485-Remote
modes are referred to as
Link-
Local
and
Link-Remote
, respectively. These modes create internal links
between the ESC port of the modem and the Remote M&C port in order
to facilitate passing M&C messages over satellite to control a remote
ESC interface:
[RS485]
New: RS485
