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INF7020 Hardware Guide
RS232C Command and Control
The RS232C connecon is pre-installed.

Communication Conditions

Set the RS232C communicaon sengs on the PC to match the monitor’s communicaon sengs as follows:
BAUD RATE: Set to the same baud rate as the BAUD RATE seng of SETUP menu (Inial seng: 38400 bps).
DATA LENGTH: 8 bits
PARITY BIT: None
STOP BIT: 1 bit
FLOW CONTROL: None

Communication Procedures

COMMAND FORMAT
When a command is sent from the PC to the monitor, the monitor operates according to the received command and sends a re-
sponse message to the PC.
C1 C2 C3 C4 P1 P2 P3 P4
Example: VOLM0030
VOLM ˽ ˽ 30
Be sure to input 4 characters for the parameter. Pad with spaces (“˽”) if necessary. (“┘” is a return code (0Dh, 0Ah or 0Dh))
Wrong : VOLM30 ┘
Right : VOLM ˽ ˽ 30 ┘
When inpung a negave value, specify a numerical value in three digits.
Example: AUTR-005
Do not use spaces for MPOS, DATE, and SC01 through SC08. Specify parameters using a specied number of characters.
Example: MPOS010097
If the Command DIRECTION is “R” in the RS232C Command Table, the current value can be returned by using “?” as the parameter.
Example:
VOLM ? ? ? ? ← From PC to monitor (How much is current volume seng?).
30 ← From monitor to PC (Current volume seng: 30).
Return Code
Command eld
(4 prescribed alphanumeric
characters)
Parameter eld
(4 character string com-
prised of: 0-9, +, -, space, ?)