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5. Communication protocol
5.1. Communication rules
1.
Flow control
2.
Bits per second
3.
Parity
4.
Data bits
5.
Stop bits
5.2. Command character strings
A command is defined by ASCII characters. It consists of a command ID number, a command
name and zero or more parameters. A carriage return (CR) code (0Dh) is added at the end of
each command. The command ID and the command name shall not be delimited. Case
sensitivity is on.
ID Command [ Parameter1 ]¥r
Example: 01vP1 ¥r
Note: "¥r" stands for a CR code (0Dh).
5.3. Command ID
Command ID represents unit ID of controlled projectors by two decimal digit ASCII characters.
The unit ID can be set by the dip switch of the unit in the range of 01 to 32. When a command
with a command ID "00" is sent, all connected projectors execute the command at once. Only
when the command ID corresponds with their unit ID or when the command ID is "00", Projectors
execute the command.
5.4. Sequence
After receiving the CR code (0Dh), the projector analyzes and executes the command within 700
msec, and starts to transfer the result string. However, if the command ID does not correspond
with the unit ID, the projector will not return any result string.
When the projector receives a command with a command ID "00", it will return the result string. If
the master function is not set effective, it will not return any result string.
When the projector is processing a command, the host shall not issue any command. (The
period of receiving result string or 700 msec after CR code transmission, whichever shorter is
regarded as the time the projector is processing the command by the host.)
* As for some commands, it might take more than 700 msec till the projector returns the result
string after receiving a command.
VS-SH10U Set-up and Installation Manual
: None
: 19,200bps/ 9,600bps (Selectable by dip switch)
: None
: 8bits
: 1bit
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