Spectrum Controls InView Series User Manual page 87

Download Messages
Messages can be downloaded to the display so that they can be triggered (or
activated) at a later time. The download of messages is generally done using the
InView messaging software but can be done from ladder logic using the
instructions below. There are three basic steps that must be done to accomplish
this.
It may be necessary to clear the memory in the display prior to downloading of
messages. This can be done either through a serial transmission from the InView
messaging software (2706-PSW1-SC), or ladder logic commands.
Download Three Messages Example
This example shows the display downloading three messages (with three
different priority levels). Setting the message size to 200 bytes (0×C8) for each
message.
Transmission for Setting Message size to 200 Bytes (Example 1)
Beg of
ADDR FUNC
Frame
: FF 06
See InView Display Communication Protocol Functions and Descriptions
NOTE
on for further explanation of the InView sign protocol being used.
The total number of bytes for each transmission (from the Beg of Frame to
NOTE
Ready to rec. resp.) must not exceed 500 bytes.
•
First, set the memory size.
•
Second, messages are then downloaded.
•
Third, clear the queue.
1. Set the message partition size in the display(s) to 200 bytes.
Transmission:
H.O L.O
ADDR ADDR
00 64
Response: NONE
2000 ms pause
2. Download three messages.
This step is accomplished with three separate transmissions to the display,
one for each message
Download message file #001
Transmission is as follows:
Chapter 4: InView Protocol
DATA
^AZ00^BEa00C8^D
User's Manual 0300277-02 Rev. D
4-23
Ready to
EOF rec.
response
CR LF