Sharp PN-70HC1E Operation Manual page 38

Controlling the Monitor with a computer (RS-232C)
nResponse code format
When a command has been executed correctly
O K
A response is returned after a command is executed.
When a command has not been executed
E R R
TIPS
• "ERR" is returned when there is no relevant command or
when the command cannot be used in the current state of
the monitor.
• If communication has not been established for reasons
such as a bad connection between the computer 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 resends the
command if this occurs.
If execution of the command is taking some time
W A I
When the following commands are used, "WAIT" is returned.
In this case, a value will be returned if you wait a while. Do not
send any command during this period.
• Commands which return WAIT:
RSET, POWR, INPS, WIDE, BOMD
38
E
Return code
(0D , 0A )
H H
Return code
(0D , 0A )
H H
T
Return code
(0D , 0A )
H H
nCommunication 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 1000 ms or more between the
command response and the transmission of the next
command.
VOLM0020
OK
Interval of 1000 ms or more
INPS0002
WAIT
OK
TIPS
• When ALL RESET is executed, the monitor enters standby
mode. Wait at least 1 minute before sending the next
command. If you execute power "On" after ALL RESET, it
will take time for the monitor to start up, so wait at least 5
minutes before sending the next command.
• Before sending a power "On" or "Off" command, it is
recommended that you perform buffer clear at the sending
application side.
• After executing a power "On" or "Off" command, wait at
least 1 minute before sending the next command.