Communication procedure
Basic operation
<Command 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.
Return code
C1 |
| C2 |
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| C4 | P1 |
| P2 | P3 | P4 |
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Command field | Parameter field | |||||||||||||||||||||||
| (4 prescribed |
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alphanumerical | comprised of: | |||||||||||||||||||||||
| characters) |
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Example: VOLM0030 |
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| VOLM |
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| 30 (“ |
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| ” indicates a space.) | |||||||||
*Be sure to input 4 characters for the parameter. Pad with spaces if necessary. Wrong: VOLM30 
Right: VOLM |
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| 30 (“ |
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| ” indicates a space. “ ” is the return code (0DH, 0AH or 0DH).) |
If a command has “R” listed for “DIRECTION” in the
Example: 1. If an ID number has not been set:
VOLM???? ← From PC to monitor (How much is current volume setting?)
30← From monitor to PC (Current volume setting: 30)
2.If an ID number has been assigned (For example, ID number = 1)
VOLM
? ← From PC to monitor (“
” indicates a space.)
30
001 ← From monitor to PC (“
” indicates a space.)
<Response code format>
■When a command has been executed correctly
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| Return code | This is returned when execution of the command is |
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| (0DH, 0AH) | finished. |
O | K |
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■When a command has not been executed correctly*
*This is returned when there is no such command, or when the command cannot be used in the current
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| Return code | state of the monitor (Example: When |
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| “ADJUSTMENT” is used (a command which is | |
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| (0DH, 0AH) | |
E | R | R |
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| effective when the input mode is “ANALOG”), while | |
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video is displayed (the input mode is “VIDEO”)).
*If there is a bad connection between the PC and monitor, or if communication has not been established, nothing is returned (not even ERR).
■If execution of the command is taking some time
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| Return code | If a command takes some time to execute, WAIT may |
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| (0DH, 0AH) | be returned as the return value. Wait for a moment, and |
W | A | I | T |
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| OK or ERR will be returned. New commands cannot be | ||||
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| received during this time, even if they are sent. |
■If
| Return code (0DH, 0AH) | If | |||||||
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| operation lock (see page 26), LOCKED is returned |
L | O | C | K | E | D |
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ENGLISH
39 E