P300H
P300 Series Modem Installation and Operating Handbook
Page 86
6.6.33 Change, Tx/Rx, ESC/Aux/BA, INTERFACES Menu
This leads to the selection of the ESC and Aux interfaces. The interface selection screens are only
shown for active ports, and so either or both may show in turn depending on how the ports are defined
for use. If both are active then the ESC interface is selected first. NOTE that these are some of the few
menus which appears on both Tx & Rx menu trees, but for which the setting is common to both !
ESC Interface
Tx & Rx ESC Interface: [Link-R]
1=RS232 2=RS422 3=RS485 4:Link to remote M&C
Change, Tx/Rx, ESC/Aux/BA, Cfg Interfaces, ESC Menu
All options except 4 are self explanatory, [Link-R] means Link-Remote and [Link-L] Link-Local. Option 4
leads onto the following menu:
Internal link to M&C Port: [Local]
1=Local M&C PC end 2=Remote end
Change, Tx/Rx, ESC/Aux/BA, Cfg Interfaces, ESC, Link to M&C
This instructs the Modem make an internal link between the ESC port and the remote M&C port. It must
be set specifically for the end of the link the modem is located at. When either of these options are
selected, the physical ESC port is disabled, as it is linked internally to the M&C port.
ÔÑÝßÔ
Incoming messages (on this modems remote M&C port Rx lines from the M&C
Master device) are routed directly to the Tx ESC channel and out over the
satellite link. Messages from the incoming satellite link on the Rx ESC channel
are routed onto the Tx output lines of the remote M&C port, to return the
responses to the Master M&C device.
ÎÛÓÑÌÛ
Messages from the incoming satellite link on the Rx ESC channel are driven
onto the remote M&C port Rx (
input
) lines, allowing any devices daisy chained
to the remote M&C port to receive a message (including this modem).
Messages present on the remote M&C port Tx (
output
) lines, which includes
any response from this unit or any device daisy chained to the remote M&C
port, are routed to the Tx ESC channel and back via the satellite link.
Aux Interface
Following the ESC interface selection the Aux port may be configured (self explanatory):
Aux Interface: [RS232]
1=RS232 2=RS422
Change, Tx/Rx, ESC/Aux/BA, Cfg Interfaces, Aux Menu
