Vessel 

• Is any source or destination required by EMs or Piping.
• Exists primarily in the CM controller but also has an interface in the EM controller.
• Has 0 or 1 parent Unit.
• References up to 3 associated instruments (Level, Temperature and other).
• References up to 30 associated incoming, outgoing and process CMs.
• Contains up to 16 tags or logic expressions (These expressions use custom logic in the CM controller with the aliased CMs and Vessels).
• May have a base material that it always contains when not empty.
• An EM will select 0 or more vessels as its source and 1 or more vessels as its destination.
• Has the following status:
  • RTS – Ready to begin sending material
  • CTS – Clear to continue sending material
  • RTR – Ready to begin receiving material
  • CTR – Clear to continue receiving material
  • CMsOK – All associated CMs are in Auto and not Faulted
  • Level
  • Temp
• Accepts the following commands:
  • CTS – Parent Unit is Clear to Send
  • CTR – Parent Unit is Clear to Receive
  • CMProgReq – Request all associated CMs to Program Mode
  • AllStop – Command all associated CMs to stop