Sharp PNA601 Computer Monitor User Manual


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33
Controlling the Monitor with a PC (RS-232C)
Advanced operation
This section explains commands for daisy chain connection.
The basic communication procedure is the same as in the
“One-to-oneconnectionwithaPC”section.
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ID numbers
YoucanassignauniqueIDnumbertoeachmonitor(see
page 24). This allows you to control a particular monitor in a
daisy chain of monitors.
YoucanassignIDnumberseitherfromthemenuscreen(using
theremotecontrol)orfromthePCusingRS-232cable.
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ID number: 1 ID number: 2 ID number: 3 ID number: 4
If monitors are connected as shown above, you can
execute commands like “Set the volume of the monitor with
ID4to20”.
WhendesignatingIDnumbersforasetofmonitorslinkedina
daisychain,youshouldbasicallyavoidanyduplicationofID
numbers.
IDnumbersdonothavetobeassignedinascendingorder
startingfromthePC.Theycanalsobeconnectedasshown
below.
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ID number: 3 ID number: 2 ID number: 4 ID number: 1
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Commands for ID control
The command examples shown on this page assume the
followingconnectionandIDnumbersetup.
ID number: 1 ID number: 2 ID number: 3 ID number: 4
IDST .........AmonitorreceivingthiscommandsetsitsownID
numberintheparametereld.
Example:
IDST0001
OK
001 ←
TheIDnumberofthismonitorissetto1.
TIPS
YoucanautomaticallyassignIDnumbersbyusingtheIDST
command with the Repeater control (see “Repeater control”
on page 34).
Forexample,usingthecommand“IDST001+”automatically
setstheIDnumbers,asshownbelow.
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ID number: 1 ID number: 2 ID number: 3 ID number: 4
IDST001+ ←
IDsettingcommandwithrepeatercontrol
WAIT
OK
001 ←
“OK”responsefromIDnumber:1
OK 002 ←
“OK”responsefromIDnumber:2
OK 003 ←
“OK”responsefromIDnumber:3
OK 004 ←
“OK”responsefromIDnumber:4(End)
IDSL ........TheparameterofthiscommandsetstheIDnumber
ofthemonitor.Themonitorissubjecttothenext
command.
Example:
IDSL0002 ←
The next command is for the monitor
withIDnumber:2.
WAIT ←
SearchingformonitorwithIDnumber:
2
OK 002 ←
FoundmonitorwithIDnumber:2
VOLM0030 ←
SetsvolumeofmonitorwithID
number:2to30.
WAIT ←
Processing
OK 002 ←
OKresponsefrommonitorwithID
number: 2
VOLM0020 ←
Setsvolumeto20.
OK 001 ←
ThevolumeofthemonitorwithID
number:1(theonedirectlyconnected
tothePC)issetto20.*
*TheIDSLcommandiseffectiveonlyonce,forthe
immediately succeeding command.
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