AMX AXB-DMX512 DMX512 INTERFACE Instruction Manual page 28

Programming
Miscellaneous Send_Commands (Cont.)
Command
ML
Defines the number of output that are
transmitted. Limits the number of chan-
nels in the transmitted DMX packet.
MM
Sets the length of the mark-after-break
in microseconds.
MO
Causes a string to be sent to the
master.
MP
Returns a string from the DMX512
indicating the maximum number of
available presets.
24
Description
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.
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).
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).
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).
AXB-DMX512 DMX512 Interface