Operating Instructions

Control Change

To program the R8 to respond to a Control Change message, send it the

following System Exclusive programming message:

F0 00 00 50 26 02 rr aa nn cc (tt pp) F7 (all values in Hex)

All bytes must be in Hexadecimal format (see p. 10). tt and pp are

rr = relay# (00 for Rel1 through to 07 for Rel8)

aa is set as follows:

if pp is omitted then:

aa = 00: relay OPEN for all control values

aa = 01: relay CLOSED for all control values

aa = 02: relay CLOSED above threshold, OPEN below threshold

aa = 03: relay OPEN above threshold, CLOSED below threshold

if pp is included then:

aa = 00: relay produces CLOSED pulse above threshold

aa = 01: relay produces CLOSED pulse below threshold

aa = 02: relay produces OPEN pulse above threshold

aa = 03: relay produces OPEN pulse below threshold

nn = MIDI Control Change#

cc = MIDI channel (see p. 10)

tt = Threshold value (threshold defaults to 64 if this byte omitted)

pp = pulse width in 8 ms increments

The R8 will accept up to 10 Note or Control Change settings per relay.

Example

To program the R8 to produce a 400 ms closed pulse on Rel8 every time the

volume on MIDI channel 16 drops below a value of 10, set rr = 07 (Rel8), aa =

01 (relay produces CLOSED pulse below threshold), nn = 07 (7 is the Control

Change# for Volume - see table p. 10), cc = 0F (see table p. 10), tt = 0A (0A

is the hexadecimal value for 10 which is the desired threshold), and pp = 32

(32 is the hexadecimal value for 50, and 50 x 8 ms = 400 ms). These values

result in the following System Exclusive programming message:

F0 00 00 50 26 02 07 01 07 0F 0A 32 F7

optional.