RDT RM96xx User Manual page 9

... serial control mode continued
Configuring the RM96xx
Setting Serial Control Mode
Select Serial Control mode by turning the rotary switch (SW2) to position 3 and switching DIL switch SW1
position '3' to the 'ON' position.
Ensure that all the remaining DIL switches are set to the required positions before pressing the STORE
button (SW3) to activate the settings.
Return the rotary switch to the '0' position when all options are configured.
Operation
Upon power-up the RM96xx will use the current DIL switch settings for Address and RF Channel. If the DIL
switches are changed during operation then this change will overide the last serial command.
The serial commands will only work in RUN mode, with either of the following operational modes selected:-
Asynchronous Mode with or without ARQ
Synchronous Mode with or without ARQ
Set or Interrogate commands will only be accepted if the RM96xx has no data to transmit and no data to
output on the serial port, otherwise they will be ignored and no response returned on the serial port. If there
is no response to a command, programming has not been successful.
Note that an RM96xx can only be successfully reprogrammed when it has completed it's present data
transfer.
The maximum time taken to program an Address is 2mS.
The maximum time taken to program a new RF channel is 15mS.
The responses to Address and Channel commands will occur within the times indicated above (assuming
the commands were successful).
If the requested RF channel exceeds the maximum allowed (as defined by the radio), then the RM96xx
defaults to the highest permissable RF channel.
Any input string that does not meet the command string format or specifies an address that is out of range
will be treated as normal ASCII text and transmitted.
Guard Time
In some instances, the user's data may be the same as a valid command string which will cause problems
with the system operation.
With a <GUARD TIME> selected, any command string must be preceded by a period of inactivity on the
serial interface which is the same as or longer than the <GUARD TIME> selected. Each command is
preceded by a <GUARD TIME>, the length of which is user selectable.
Users not wishing to use the <GUARD TIME> facility must select 'No Guard Time' from the options
available.
ROTARY SWITCH = 7
1
SWITCH SW1
Description
SPARE
Options
Bold items denote factory defaults.
2 3
Serial Control
SPARE
Guard Time
OFF OFF = No Guard Time
OFF ON = 200 mS
ON OFF = 500 mS
ON ON = 1 Second
4 5
ARQ
Retries Address
OFF = 20
ON = Infinite
11
6 7
Global
SPARE
OFF
ON
8
SPARE