Commands, Learn command – Grass Valley Switcher Products User Manual
Page 99
Switcher Products — Protocols Manual
99
Commands
Commands
Note
The Kalypso and Zodiak systems use the Learn, Recall, and Trigger com-
mands. The Query, Read, and Write commands and responses are not used
by these systems, but command descriptions for them are included in this
document for completeness.
Learn Command
The controlling device sends a Learn command to a selected controlled
device to cause the controlled device to “learn” its current status or mul-
tiple keyframe effect. The controlled device’s response to the Learn
command should be to store in its own memory whatever data is needed
in order for it to recall its current setup at some later time. No further
response from the controlled device is required.
The format of the Learn command is:
Lddddddrrr
•
The first byte is the ASCII keyword for Learn, L (4CH).
•
Next a six-byte field of ASCII characters (dddddd) acts as a bit map that
identifies which controlled devices are included in the Learn (see
).
•
Next the controlling device sends a three-byte field of ASCII characters
(rrr) representing a hex number that identifies the hex register number
(000H-FFFH) from which the controlling device will recall the learned
effect.
•
A carriage return ends the message.