Automation - Lexicon PCM 81 - REV User Manual

MIDI Operation
SysEx Automation

Automation

The PCM 81 will transmit SysEx automation messages when Control Mode
parameter 3.4, MIDI Automation is set to On. All changes made by front panel
operations are transmitted as PCM 80 SysEx messages. This is intended
primarily for use by editor programs and in configurations where it is desirable
for one or more PCM 81s to be slaved to a single PCM 81 acting as a master.
The current mode (Program Banks, Register Banks, Edit, Control or Tempo) of
the slave does not follow the master, but the actual parameter values do. (SysEx
automation can also be stored on a sequencer and replayed in real-time. As a
general rule, automating more than two or three SysEx program changes at once
is not receommended.) Because messages are transmitted as PCM 80 mes-
sages, either PCM 80s or PCM 81s can be slaved to the master.
The PCM 81 can receive SysEx messages when Control mode 3.7 MIDI SysEx
is set to Receive On. Note that when using SysEx automation, the device of the
receiving PCM 81 must match the Target ID of the transmitting PCM 81.
The Target ID setting can be adjusted fropm Control 3.4 MIDI Automation. It is
selected by pressing Load/ after setting Automation to On. The default setting
for the Target ID is All.
The Device ID setting can be adjusted from Control mode 3.7 MIDI SysEx. It is
selected by pressing Load/ after setting SysEx to Receive On. The default
setting for the Device ID is 0.
Controller Automation
For applications where it is desirable to "automate" changes made to PCM 81
effects with its own controls ( ADJUST knob, Foot Pedal, Footswitch 1 or
Footswitch 2), we recommend assigning the controllers to MIDI destinations
and recording the changes with a MIDI sequencer (see Control Mode parameter
3.5, MIDI Destinations).
Reset All Controllers
The PCM 81 recognizes the "Reset All Controllers" message. When received,
all patched parameters are reset to their stored values. Patched parameters may
also be reset from the PCM 81 front panel —Control Mode parameter 3.0 (the
message will be transmitted from the PCM 81 as well).
MIDI Clock and Clock Commands
The PCM 81 recognizes MIDI clock messages when Tempo Mode parameter
0.2, Tempo Source is set to MIDI. Any Delay or LFO parameter set to display
tempo values will be synchronized to the tempo of the incoming MIDI clock.
MIDI Clock and Clock Commands are also available as Dynamic MIDI patch
sources. The value of MIDI Clock when used as a patch source is a linear scaling
of 0 to 127 (0 = 40 BPM and 127 = 400 BPM). The value of Clock Commands
when used as a Dynamic MIDI patch source is 1 for START and CONTINUE and
0 for STOP.
PCM 80 Compatibility
The PCM 81 can receive MIDI data from either the PCM 80 or another PCM 81.
It can also transmit certain messages in PCM 80 format. (See Bulk Data Dumps
and SysEx Automation.) This allows most data to be exchanged between the two
products, with any format translations handled automatically by the PCM 81.
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