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Controlling the Monitor with a PC (RS-232C)
You can control this monitor from a PC via RS-232C (COM
port) on the PC.
You can also connect multiple monitors via a daisy chain by
using a PC. By assigning ID numbers to each monitor (see
page 34), you can make input mode selection/adjustment or
can check the status of a specific monitor.
Precautions when the PN-ZB02 (optional) is attached
• To control the monitor via RS-232C, set RS-232C/LAN
SELECT to RS-232C.
• You cannot use RS-232C and LAN control simultaneously.
PC connection
nOne-to-one connection with a PC
Connect with RS-232 straight cable between the PC's COM
port (RS-232C connector) and the RS-232C input terminal on
the monitor.
RS-232C input terminal
RS-232 straight cable
(commercially available)
nDaisy chain connection...
Connect with RS-232 straight cable between the PC's COM
port (RS-232C connector) and the RS-232C input terminal on
the first monitor.
Next, connect RS-232 straight cable to the first monitor's
RS-232C output terminal and to the second monitor's
RS-232C input terminal. Connect in the same way to the third
and subsequent monitors.
Up to 25 monitors can be connected. (Depending on the
length of the cable used and the surrounding environment.)
First monitor
RS-232C
output terminal
RS-232C
input terminal
PC
To COM port
32
E
Communication conditions
Set the RS-232C communication settings on the PC to match
the monitor's communication settings as follows:
Baud rate
Data length
Parity bit
* S et to the same baud rate as the BAUD RATE setting of
SETUP menu. (Initial setting: 38400 bps)
* W hen connecting multiple monitors in a daisy chain, set all
monitors to the same BAUD RATE.
Communication procedure
nCommand format
When a command is sent from the PC to the monitor, the
monitor operates according to the received command and
sends a response message to the PC.
PC
To COM port
* Be sure to input 4 characters for the parameter. Pad with
Advanced operation
When inputting a negative value, specify a numerical value in
three digits.
Do not use spaces for MPOS, DATE, and SC01 through
SC08. Specify parameters using a specified number of
characters.
Second monitor
If a command has "R" listed for "DIRECTION" in the
"RS-232C command table" on page 37, the current value can
be returned by using "?" as the parameter.
RS-232 straight cables
(commercially available)
*
8 bits
None
C1
C2
C3
C4
P1
Command field
(4 character string comprised of:
(4 prescribed
alphanumerical characters)
Example: VOLM0030
VOLM
30
spaces (" ") if necessary.
("
" is a return code (0D
, 0A
H
Wrong : VOLM30
Right : VOLM
30
Example: AUTR-005
Example: MPOS010097
Example:
From PC to monitor (How much
VOLM ? ? ? ?
←
is current volume setting?).
From monitor to PC (Current
30
←
volume setting: 30).
* If an ID number (see page 33) has been assigned
(For example, ID number = 1).
VOLM
?
←
From PC to monitor.
30 001
←
From monitor to PC.
Stop bit
1 bit
Flow control
None
Return code
P2
P3
P4
Parameter field
0-9, +, -, space, ?)
or 0D
))
H
H
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