MTS Series 793 - Manual (Page 172)

Remote Transmission Requests—The RTR check boxes add additional functionality to output messages.
RTR messages must not include any data fields.
• RTR Frame— Sends a request (to a CAN device) for data in the form of a message. To receive an RTR
Frame output message, a CAN device requires an input message with the same message ID to receive
the requested message.
• RTR Data— Sends the output message (signal or static fields) when an RTR Frame message (request)
from another device is received.
Action messages
Action messages contain static fields that define commands or other information associated with an event.
Each CAN Action message that you create appears as an available action in the Event Action Editor tool
(available in the Station Manager application). You can use the Event Action Editor tool to assign CAN Action
messages to Series 793 Controller events.
Once assigned to an event, the CAN Action message is sent whenever that event occurs. For example, you
could configure a limit-detection event to send an action message.
Note:
Action messages cannot contain input or output fields.
CAN Bus Output Message Settings
Assign each CAN output to a CAN output message that defines CAN bus network connection settings and
a specific CAN Message ID.
Important:
When you use the Station Builder application to assign messages from a CANdb file to an output, most
message settings are not editable (although you can add static fields).
172 MTS Series 793 Control Software
Station Manager Application