Rockwell Automation 2706-LSW DL40 PLUS OFFLINE PROG.SFTWR.USER MANUAL - Manual (Page 16)

1–9 Overview of the DL40 Plus
Publication 2706-6.2
Background Messages
Specify a background message that will display whenever the DL40
Plus has no other triggered messages in the queue.
Hidden Messages
Hidden messages do not appear on the DL40 Plus display or have
any affect on what is being displayed. Hidden messages can be sent
to a slave display, printed, or stored on the Historical Events Stack.
Embedded Variables
Messages can contain variable data. Variable values are received
when the message is triggered. Incoming variable data can be binary,
BCD (binary coded decimal), and/or ASCII. You can also embed
time and date information in a message from the battery-backed
real-time clock of the DL40 Plus.
Data Mode Selection
When using the DL40 Plus with Remote I/O or parallel input for
communication, you can select two data modes:
•
Binary
•
Binary Coded Decimal (BCD) either signed or unsigned
Within any application, triggers and variable data can be in either
form. For example, message triggers can be in a binary format, while
variable data can be BCD.
Note: When using serial RS-232 or RS-485 communications, all
data is in ASCII character format.
Message Chaining
Chain messages together for display in sequence. Only the first
message in the chain is triggered from the host controller. Then each
message in the chain can trigger the next until the complete sequence
has run.