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1892 1139 - RSX Range of Intelligent Modems User Guide - v7.1 / Nov 2007
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This is only permitted if the Read from Unit command was previously used to
upload settings at some point during the session.
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If you did not do this, save the configuration to disk, read the unit, and then retrieve
the configuration again. See below.
2.2.3.7
Completing Programming
This completes programming and the unit may be disconnected. It is not necessary to
switch off power or stop the program first.
2.2.3.8
Programming Further Units
Further units may be programmed by disconnecting one unit and connecting the next,
which may be done without switching the power off.
Proceed as above, downloading the configuration when all the channel parameters are
correct. For identically-programmed units, downloading is all that is necessary.
2.2.3.9
Saving and Retrieving Configurations
It is possible to save and retrieve configurations on disk for later use.
To save a new configuration, select
File > Save Parameters As
. To save a previously
saved configuration, select
File > Save Parameters
.
To retrieve a configuration, overwriting any existing configuration on the screen, select
File > Load Parameters
.
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This feature is also useful if you find that you cannot program a unit because you
omitted to read it first. Save your edited configuration, read the unit, then retrieve
the configuration.
2.3
CHANGING CHANNEL USING SERIAL COMMANDS
The channel can be changed by sending a serial channel number 0-255 as a single
RS232 byte on pin 9 (PGM). The protocol is:
9600 baud, RS232 levels, 1 start bit - 8 bit data - no parity - 1 stop bit
Single-byte, channel number in binary, LSB first (decimal 0 to 255)
Idle state for at least 40ms before and after byte.
As soon as the message is recognised as a valid command, the channel is changed. No
confirmation is required, and the setting is remembered during unit power off.
