Rockwell Automation 2706-P42_P43_P44_P72_P74_P92_P94 InView Marquee Message Display User Manual - Manual (Page 69)

Publication 2706-UM016D-EN-P - March 2006
InView Protocol 4-3
all messages are removed or cleared, the background message
(message # 4095) is displayed.
The CTRL-V Function Frame - Numeric Variables
The CTRL-V function is used to update variables that are embedded
within messages. The value of the variable number determines which
variable register is updated in the display. If no display address is
used, it updates all displays with the variable data. The Control-V
Frame Format shows the format for updating variables and the
Control-V Frame Description shows the acceptable values for the
CTRL-V function.
Control-V Frame Format
The following table indicates the values to use in the Control-V
format.
TIP
If no background message is programmed, the
default message NO BACKGROUND MESSAGE
appears.
Optional
(1)
Name [CTRL][V] Variable Data Backslash Variable # Backslash Display
address <CR>
(1) If the Variable # and Display address are not used; only variable 0 on all displays will be updated. If the Variable # is used and not the Display address, that variable
number will be updated on all displays.
Control-V Frame Description
Data Acceptable Values Description
ASCII Hex
[CTRL][V] ^V \16 Start of Header
Variable Data
-32768 to 32767 (ASCII decimal)
(1) \2D\33\32\37\36\38 to
\33\32\37\36\37 Data
Backslash \ \5C Backslash
Variable # 0 … 99 (ASCII decimal) \30 to \39\39 Variable ID number
Backlash \ \5C Backslash
Display Address 1 … 255 \31 to \32\35\35 Display address where 255 is a
broadcast address.
<CR> or [CTRL][M] ^M \0D Carriage Return
(1) To display negative values for a variable, +/- variable format must be selected in the software or sent via protocol (See section InView Display Communication Protocol
Functions and Descriptions for further explanation of the InView sign communication protocol being used).