Event types are programmable and include:
NOTE
The Relay can be programmed to respond to Note messages of programmable Note number and MIDI channel (a single MIDI channel or all 16 MIDI channels). The Relay will accept a combined total of 10 Note or Control Change settings.
The Relay can respond to Note messages in eight modes:
1. CLOSE for Note-ons, OPEN for Note-offs
2. OPEN for Note-ons, CLOSE for Note-offs
3. CLOSE for both Note-ons and Note-offs
4. OPEN for both Note-ons and Note-offs
5. Produce a CLOSED pulse on receipt of Note-on
6. Produce a CLOSED pulse on receipt of Note-off
7. Produce an OPEN pulse on receipt of Note-on
8. Produce an OPEN pulse on receipt of Note-off
Combining these modes allows the Relay to respond to different Note messages in different ways. For example the Relay can be programmed to close for some Notes and open for others, close when a Note is pressed and open when it is released, and produce a pulse when another Note is received. Pulse duration times are programmable from 8 - 1016 ms in 8 ms increments, and from 1 - 127 s in 1 s increments.
In addition, a Link function allows the relay to be specified only to open or close if all other settings are also in that state. For example, the relay could be programmed to close only if all of a group of Notes are on.
CONTROL CHANGE
The Relay can be programmed to respond to Control Change messages of programmable Control Change number and MIDI channel (a single MIDI channel or all 16 MIDI channels). The Relay will accept a combined total of 10 Note or Control Change settings.
The Relay can respond to Control Change messages in eight modes:
1. CLOSE above threshold value, OPEN below threshold value
2. OPEN above threshold value, CLOSE below threshold value
3. CLOSE for all values
4. OPEN for all values
5. Produce a CLOSED pulse above threshold value
6. Produce a CLOSED pulse below threshold value
7. Produce an OPEN pulse above threshold value
8. Produce an OPEN pulse below threshold value
Combining these modes allows the Relay to respond to different Control Change messages in different ways. For example the Relay can be programmed to close for some Control Change messages and open for others, close when a Control Change passes above a threshold and open when it falls below it, and produce a pulse when another Control Change passes a threshold value. Pulse duration times are programmable from 8 - 1016 ms in 8 ms increments, and from 1 - 127 s in 1 s increments. Threshold values are programmable from 0 - 127.
In addition, a Link function allows allows the relay to be specified only to open or close if all other settings are also in that state. For example, the relay could be programmed to close only if all of a group of CC values are below their programmed thresholds.
PROGRAM CHANGE
The Relay can be programmed to respond to Program Change numbers 0 to 127, on any MIDI channel (a single MIDI channel or all 16 MIDI channels). The Relay can be programmed to OPEN or CLOSE on receiving each Program Change number.
Instead of latching open or closed, the Relay can be programmed to produce an open or closed pulse when selected Program Change messages are received. Pulse duration times are programmable from 8 - 1016 ms in 8 ms increments, and from 1 - 127 s in 1 s increments.
SYSTEM EXCLUSIVE
The Relay can be programmed to CLOSE when a System Exclusive message is received, and/or OPEN when another System Exclusive message is received.
Instead of latching open or closed, the Relay can be programmed to produce an open or closed pulse when the System Exclusive messages are received. Pulse duration times are programmable from 8 - 1016 ms in 8 ms increments, and from 1 - 127 s in 1 s increments.
Since MIDI Machine Control messages are a type of System Exclusive message, the Relay can be set up to respond to messages such as transport commands. For example the Relaycould be programmed to open and close in response to MIDI Machine Control Play and Stop messages.
The maximum length of each System Exclusive message is 20 bytes.
A fast reed relay is used for a response time of less than 2 ms. Relay contacts are rated at 500 mA. Contacts are made available via connection at the tip and sleeve of a 1/4" mono phone jack. When switching inductive loads be aware of precautions that must be taken to avoid back EMF problems.
The Relay is programmed by sending it MIDI System Exclusive messages (read the Programming FAQs for more details). This is easily done with the MIDI Solutions Programming Tools software. Once programmed, its settings are retained even after power is removed. The Relay can be reprogrammed with new settings as often as needed.
The Relay is MIDI-powered, and requires no batteries or power supply to operate with most MIDI products (for more information read the Power FAQs). A MIDI indicator LED lights up when the product is powered and flashes when MIDI data passes through it.
Read Less
