Grass Valley VM 3000 System Controllers v.7.4 - Manual (Page 175)

Hardware Installation
2−103 VM 3000 Installation and Operating Manual
Figure 2−117. Example of MI 3040/2 connections.
MI 3040/2
Relay contacts
MPK bus Relay 0
Play
Relay 1
Stop
Relay 2
Play
Relay 3
Stop
Opto 0
Play
Opto 1
Stop
Opto 2
Play
Opto 3
Stop
Machine 1 Machine 2
2 2 2 2 2 2 2 2
Status in
up to 20 machines max.