User Manual

32
E
Controlling the Monitor with a PC (RS-232C)
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Response code format
When a command has been executed correctly
O K
Return code
(0DH, 0AH)
Aresponseisreturnedafteracommandisexecuted.
When a command has not been executed
R R E
Return code
(0DH, 0AH)
TIPS
• “ERR”isreturnedwhenthereisnorelevantcommandor
whenthecommandcannotbeusedinthecurrentstateof
themonitor.“ERR”isalsoreturnedwhenreturncodeonly
issentwithoutanycommand.
• Ifcommunicationhasnotbeenestablishedforreasons
suchasabadconnectionbetweenthePCandmonitor,
nothingisreturned(notevenERR).
• “ERR”maybereturnedwhenacommandcannotbe
receivedcorrectlyduetointerferencefromthesurrounding
environment.
Pleaseensurethatthesystemorsoftwareretriesthe
commandifthisoccurs.
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Communication interval
• AfterOKorERRisreturned,youmustsendthefollowing
commands.
 Tosetatimeoutforthecommandresponse,specify10
secondsorlonger.
• Provideanintervalof100msormorebetweenthe
commandresponseandthetransmissionofthenext
command.
VOLM0020
OK
CONT0001
OK
Interval of 100 ms or more