PLC-HP7000L Expand Serial Command Functional Specifications
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3 Notes for communication
1.
Expand Serial Command is defined as a single command per line that starts with “C” and ends
with carriage return (0x0D).
2.
There are two types of commands; Functional Execution Commands and Status Read
Command.
-
Example of Functional Execution Command: “CF_BRIGHT_032” [CR]
-
Example of Status Read Command: “CR_BRIGHT” [CR]
Note) “_” means a space
3.
When it takes more than a second to receive a single command, it is not executed.
When it takes more than a second to receive carriage return (0x0D) since the reception of the
first data “C”, it clears the information of the receive buffer.
4.
When the command pipelining, allow the interval time of no less than100ms after receiving
return value. (No less than 100 ms)
Command
PC
→
Projector “CF_BRIGHT_032” CR
Next command
Projector
→
PC
“000”
CR
Return Value
(
A few ms - 5s)
5.
Do not send another command before the reception of the return value; the operation by the
command is not ensured.
However this is not the case when no response is returned after more than 5 seconds.
6.
It takes about 5 seconds for internal initialization after plugging in AC power. During this time, it
cannot process commands. Do not issue any command.
4 Notation Convention
1.
Data from a controller to a projector is represented as COMMAND, and data from a projector to
a controller in response to the incoming command is represented as RESPONSE.
2.
[CR]: Carriage Return Code
Carriage Return code is added to the end of the command.
Response is also followed by carriage return code.
3.
_: Space Code
Space Code is represented as (_).
4.
%1: Parameter included in Command
When there are more than one parameter, they are defined as %2, %3…
5.
%%%: Error Code returned from a projector
Acceptable: “000”.
Unacceptable: See [7. Error Code Table].
