migra MPB CAN
Large Format Graphics Compatible LED Display with CANopen Interface
Page 18
microSYST Systemelectronic GmbH, Am Gewerbepark 11, 92670 Windischeschenbach
+49 9681 91960-0,
+49 9681 91960-10, [email protected], www.microsyst.de
3.7.2.4 Displaying Variables
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
ESC
Function
Display / clear
Var. no.
hundreds
Var. no.
tens
Var. no.
ones
1B
h
“V”
(56
h
)
“+” (2B
h
): display
“-” (2D
h
): clear
“0” - “9”
(30
h
-39
h
)
“0” - “9”
(30
h
-39
h
)
“0” - “9”
(30
h
-39
h
)
When the display is cleared, the surface at which the variable is
displayed is overwritten with the current online background colour (from
the last “ESC-A” frame)! Black is used if the background colour has
been set to transparent!
3.7.2.5 Setting Variables
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5.
Byte 6
Byte 7...133
ESC
Function
Set
Var. no.
hundreds
Var. no.
tens
Var. no.
ones
Variable
values
1B
h
“V”
(56
h
)
“=” (3D
h
): set
“0” - “9”
(30
h
-39
h
)
“0” - “9”
(30
h
-39
h
)
“0” - “9”
(30
h
-39
h
)
(20
h
-FF
h
)
Variables may include up to 127 characters (the length of the variables
is set during configuration).
The same number of characters are overwritten at the variable as are
transmitted with the frame.
In order to avoid flickering, the old display is not cleared until after the
new display is read out!
The background colour used for variables may not be transparent, and a
character set with uniform character width should be used in order to
assure correct display. Otherwise, the variable must be cleared prior to
making a change, and then displayed once again!
Variable content is stored to RAM only. After the device has been
switched off and back on again, the variables are returned to their pre-
configured values.