LC-M3700 (serv.man29). part-2 PC Operation, Settings adjustments, Troubleshooting , Appendix - Sharp TV User Guide / Operation Manual. Page 13

<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.

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.

» If repeater control is used during ID designation (IDSL, IDLK), the ID designation is cancelled.