Spectrum Controls InView Series User Manual page 101

<SOH>
Description ASCII
Start of
^A
Header
<STX>
Description ASCII
Start of
^B
Text
Special Function Command to Clear Display Memory
Description
End of Transmission
Set Message Size
The message size is the number of bytes that each message can be stored in. This
message size will partition the displays memory based on the number of bytes
used in the message size. When this command is used, it (generally, based on
model of display) takes 200,000 bytes and divides it by the number of bytes used
for the message size. For example, 2,000 message partitions would be available if
the message size was set to 100 bytes (200,000 bytes/100 bytes/message = 2,000
messages).
The number of bytes used in each message is the number of bytes used from the
<SOH> to the <EOT> inclusive. Therefore, care must be used to ensure that the
number of bytes sent does not exceed the Message Size. The range for the
message size is 50 bytes to 450 bytes. The following is the message data used to
set the message size.
Special Function Command to Set Memory Size
<SOH>
Description ASCII
Start of
^A
Header
<STX>
Description ASCII
Start of
^B
Text
Type Code
Hex Description ASCII
01 All displays
Command
Hex Description ASCII
Write
02 Special
Function
<EOT>
Type Code
Hex Description ASCII
01 All displays
Command
Hex Description ASCII
Write
02 Special
Function
Chapter 4: InView Protocol
Display Address
Hex Description
Display
Z 5A
Address
Command Code
Hex Description
Clear
E 45
Memory
ASCII
^D
Display Address
Hex Description
Display
Z 5A
Address
Command Code
Hex Description
Clear
E 45
Memory
User's Manual 0300277-02 Rev. D
4-37
ASCII Hex
00 3030
Function
ASCII Hex
$ 24
Hex
04
ASCII Hex
00 3030
Function
ASCII Hex
a 61