Rockwell Automation 2706-LV2P_LV2R_LV4P_LV4R DL40 PLUS USER MANUAL - Manual (Page 22)

Overview of the DL40 Plus 1–12
Publication 2706-6.1
The Parallel port version of the DL40 Plus has 2 Run modes.
•
Message/Variable/Slave Mode triggers a message with 1 to 40
variables, depending on trigger method, and variable type.
•
Message List Mode triggers a message list of up to 20 messages
in round robin order.
To select Run mode, use the Onboard Editor or the Offline
Programming Software.
For more details on the various run modes, see Chapter 5, Online
Operating Modes.
Serial Triggering (RS–232/RS–485)
Both the Remote I/O and the Parallel port versions of the DL40 Plus
support serial triggering. The RS-232, RS-485, or Keyboard port
can control message triggering and variable data communications.
Serial triggering uses Open protocol, which communicates using
ASCII characters in a serial data stream. For detailed protocol
specifications, refer to Chapter 6, Serial Port Communications.
Open protocol is available in the following run modes:
•
Message/variable/slave mode
•
Message/variable
•
Message list
Offline Modes
The DL40 Plus offers the following offline operating modes:
•
Help mode
•
Historical Recall mode
•
Remote Program mode (for Offline Programming Software)
•
RS-232/RS-485 Port Configuration mode
•
Clock mode
•
Print mode
•
Debug mode (on Parallel port versions only)