Programming
22
AXB-DMX512 DMX512 Interface
Miscellaneous Send_Commands (Cont.)
Command
Description
ML
Defines the number of output that are
transmitted. Limits the number of chan-
nels in the transmitted DMX packet.
Default and maximum is 512. The number of packets sent per second
will increase accordingly, this can cause the break-to-break time to
drop below the official minimum time of 1,196 microseconds. This
takes place downstream from the AXB-DMX512s’ output buffer and
has no affect on any other commands.
The DMX box still keeps track of its DMX output values internally,
even though these are no longer a part of the transmitted packet.
Always transmit at least one channel (ML0 is not allowed).
Syntax:
"'ML<number>'"
Example:
SEND_COMMAND DMX,'ML128'
Sends out only 128 outputs per packet. This will cause 88 packets
per second with no other changes.
SEND_COMMAND DMX,'ML512'
Sends out only 512 channels per packet at 44 packets per second.
SEND_COMMAND DMX,'ML256'
Sends out only 256 channels per packet at 88 packets per second.
MM
Sets the length of the mark-after-break
in microseconds.
Range is from 8 to 10,000 microseconds.
Syntax:
"'MM<Time in uS>'"
Variable:
Time in uS = Default and minimum is 8uS. Maximum is 10000uS.
Example:
SEND_COMMAND DMX,'MM8'
Sets the mark-after-break to 8 microseconds (default).
MO
Causes a string to be sent to the
master.
Causes a string to be sent to the master indicating the current 8-bit
value of an output channel.
Syntax:
"'MO<DMX Output>?'"
Variable:
DMX Output = 1-512
Example:
SEND_COMMAND DMX,'MO1?'
Sent to the AXB-DMX512 box. The box replies “‘MO1@255’,13,10”
indicating that DMX output 1 is at 100% (255).
SEND_COMMAND DMX,'MI2?'
Sent to the AXB-DMX512 box. The box replies “‘MO2@127’,13,10”
indicating that DMX output 2 is at 50% (127).
MP
Returns a string from the DMX512
indicating the maximum number of
available presets.
Total available presets, including those already in use. This is cur-
rently fixed at 72.
Syntax:
"'MP'"
Causes a string to be sent to the master.
Example:
SEND_COMMAND DMX,'MP'
When MP is sent to the DMX512 box, the box replies MP72,
indicating that there are a total of 72 presets available (with standard
memory).
Содержание AXB-DMX512 DMX512 INTERFACE
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