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The format of the RECALL command is:
Format:Rddddddrrr<cr>
R
dddddd
rrr
<cr>
Trigger
The master device sends a TRIGGER command to run an event that has been
previously readied. For example, a disk read command sends a character
generator to recall the text of a credit sequence (unknown execution time)
would be followed by a precisely timed TRIGGER command, causing a
credit roll to take place. Further, a peripheral can have up to 16 triggerable
functions.
The trigger command is sent either as part of a register recall or as the result
of some manual operation of the panel. When invoked as part of a recall, the
command is sent to the selected peripherals prior to the vertical interval in
which the master actually performs the recall.
The amount of advance notice provided by the master may vary from one
switcher to another, from a maximum advance of 7.5 fields to a minimum of
1.5 fields. There is no response to this command from the peripheral.
The format of the TRIGGER command is:
Format:Tddddddrrr<cr>
T
dddddd
rrr
<cr>
The RECALL command abbreviation.
The peripheral address. It is a 6-character field that is interpreted
as a hex representation of a 3-byte or 24-bit bitmask. The bits that
are set (value 1)indicate which of 24 peripherals are included in
the RECALL command.
A 3-character field, which is interpreted as a register number from
0 to FFF.
A carriage return.
The TRIGGER command abbreviation.
The peripheral address. It is a 6-character field that is interpreted
as a hex representation of a 3-byte or 24-bit bitmask. The bits that
are set (value 1) indicate which of 24 peripherals are included in
the TRIGGER command.
A 3-character field which is interpreted as a register number from
0 to FFF.
A carriage return.
A-41
Appendixes
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