Sharp PNL802BPKG2A Computer Monitor User Manual


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Controlling the Monitor with a PC (RS-232C)
n
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. You can use Repeater
controlfunctionwithoutassigningIDnumbers.
[E
xamp
l
e
]
Set 1
Set 2 Set 3Set 4
*Ifmonitorsareconnectedasshownabove,youcan
execute a command like “Set all monitors’ input settings to
PCD-SUB”.
n
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
specicset,assignIDnumberstoeachmonitorinadvance.
Whensomemonitorsdonotreturntheirresponses,the
probable cause is that the monitors could not receive the
commandorcommandprocessingisnotcomplete.Donot
send a new command.
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
Volumesettingsforall
monitors are returned.
20
002
30
003
30
004
TIPS
• IfrepeatercontrolisusedduringIDdesignation(IDSL,
IDLK),theIDdesignationiscanceled.
Setting of the GAMMA user data
n
To transfer the GAMMA user data
Usetheuserdatatransfercommands(UGRW,UGGWand
UGBW).ForeachoftheR,GandBcolors,dividethetotal
512piecesofuserdatainto16blocks,andtransfer32pieces
of data with each command.
C1 C2 C3 C4 P1 P2 P3 P4
…
S1 S2
Command field
Block number (01 to 16)
Data fieldChecksum field
Example:Totransferthedataofblock1(0to31levels)
of red (R) data
UGRW01000000010002 … 0031C0
Command
Block number
32 pieces of data Checksum
One piece of data consists
of 4 digits.
* Ifdataislessthan4digits,adda“0”(zero)tomakeit4
digits.
* Thechecksumeldisthecharacterstring(ASCII)dataof
lower-orderonebytewhichindicatesthesumoftheblock
numberand32piecesofdatainhexadecimal(0toF).
n
Saving the GAMMA user data
Usetheuserdatasavecommand(UGSV)tosavethe
transferred user data in the monitor.
If the data is not saved, it will be cleared when:
• Themainpowerswitchisoff
• STANDBYMODEisLOWPOWERandthemonitorenters
standby mode
n
Activating the GAMMA user data
Toactivatethetransferreduserdata,selectUSERforGAMMA
ofthePICTUREmenu,orsendthecorrespondingRS-232C
command.
n
Checking the GAMMA user data
Usetheuserdatareadcommands(UGRR,UGGRand
UGBR)toreturn512piecesofuserdataforeachoftheR,
GandBcolors.Dividethedatainto16blocksandreturn32
pieces of data with each command. The value to be returned
is not the value stored in the monitor, but the value in the
temporary memory for display. (These values are the same
whentheuserdatasavecommand(UGSV)abovehasbeen
sent.)
TIPS
• TheuserdataisnotinitializedbyRESETofthePICTURE
menu.Toinitializetheuserdata,useALLRESETofthe
FUNCTIONmenu.
TheGAMMAuserdatainitializecommand(UGRS)allows
theinitializationoftheuserdataonly.
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