microSYST migra MPB PB, Руководство пользователя, Страница: 16 / 51

migra MPB PB
Large Format, Graphics Compatible Display with Profibus Interface
Page 16
microSYST Systemelectronic GmbH, Am Gewerbepark 11, 92670 Windischeschenbach
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+49 9681 91960-0,
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+49 9681 91960-10, info@microsyst.de, www.microsyst.de
3.6.2.4 Query 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” “+”: display
“-”: clear “0” – “9” “0” – “9” “0” – “9”
When the display is cleared, the surface at which the variable is dis-
played 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”.
3.6.2.5 Set 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” “=”: set “0” – “9” “0” – “9” “0” – “9”
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 outputted!
The background colour, used with the 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 the 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.