Rockwell Automation 2706-P42_P43_P44_P72_P74_P92_P94 InView Marquee Message Display User Manual - Manual (Page 91)

Publication 2706-UM016D-EN-P - March 2006
InView Protocol 4-25
Transmission:
Transmission for Clearing the Message Queue
Response: NONE
Preview a Message
Four separate types of transmissions are required for message
preview. This is primarily done using the automation software to
preview a message. First, clear the Message Queue. Second,
download the message to the appropriate memory partition. Third,
trigger the message triggered for viewing. Fourth, generate a heartbeat
(if enabled) so that there is some serial network activity allowing the
message to be previewed. The software automatically performs these
steps.
This is an example of previewing Message #0001 as a target memory
position.
1. Clear the message queue
This transmission is used to remove all currently running
messages on the display for all displays.
Beginning
of Frame ADDR FUNC H.O.
ADDR
L.O.
ADDR
DATA LRC
Error
EOF Ready to
rec. resp
: FF 06 00 65 FFFF 98 CR LF
TIP
A message preview is not recommended for
run-time.
TIP
Message preview causes the loss of data in the
memory partition where the message is stored.