Sharp LC-M3700 - Manual (Page 43)

US
42
<Repeater control>
This system has a function to allow setting of multiple monitors connected in a daisy chain using a
single command. This function is called repeater control.
Up to about 20 monitors can be connected, depending on the length of RS-232C cables and
installation environment.
You can use Repeater control function without assigning ID numbers.
PC Set 1 Set 2 Set 3 Set 4
[Example]
If monitors are connected as shown above, you can execute a command like “Set all
monitors’ input settings to INPUT”.
<Repeater control command>
Repeater control is achieved by setting the FOURTH CHARACTER of the parameter to “+”.
Example: VOLM030+
← Sets volume of all monitors to 30.
In repeater control, responses are returned by all the connected monitors.*
If you want to determine that a value has been returned by a specific set, assign ID numbers to
each monitor in advance.
If no response is returned, this may be because the monitor has not received (or is still pro-
cessing) the command, so it is possible that new commands may not be executed even if they
are sent.
* If power is turned “OFF” using Repeater control, only the monitor closest to the PC returns a
response.
Example: (When 4 monitors are connected, and assigned ID numbers 1 through 4)
VOLM030+
WAIT
OK
001
OK 002
OK 003
OK 004
← If 4 monitors are connected in a chain, reliable operation can be ensured
by sending a new command only after a reply has been returned by 4th
(last) monitor.
PC Operation (Continued)
Repeater control can also be used for reading settings.
Example:
VOLM???+
WAIT
10
001
20 002
30 003
40 004
Volume settings for all monitors are returned.
NOTE:
» If repeater control is used during ID designation (IDSL, IDLK), the ID designation is canceled.