Sharp LC-M3700 LC-M3700 Operation Manual - Page 43

PC Operation (Continued) 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. [Example] PC Set 1 Set 2 Set 3 Set 4 If monitors are connected as shown above, you can execute a command like "Set all monitors' input settings to INPUT". 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 processing) 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 Volume settings for all monitors are returned. 40 004 » If repeater control is used during ID designation (IDSL, IDLK), the ID designation is canceled. NOTE: US
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