migra MPB PB
Large Format, Graphics Compatible Display with Profibus Interface
Page 10
microSYST Systemelectronic GmbH, Am Gewerbepark 11, 92670 Windischeschenbach
+49 9681 91960-0,
+49 9681 91960-10, [email protected], www.microsyst.de
3.5 Online Frame Layout
The frame to the large format display consists of 3 parts:
Header
Data Unit
Trail
Frames to the large format display are not evaluated by the device until
3 to 240 ms after the last frame byte has been received (depending up-
on baud rate settings). The pause between the individual frame bytes
may not exceed this period of time! The pause between the individual
frames must exceed this period of time!
The next frame can be transmitted immediately after the response frame
has been received.
If no response frame is used, the large format display is not ready to re-
ceive a new frame until the last received frame has been completely
processed. For example, if a large graphic is displayed, a longer waiting
period is required than would be the case for reading out an “online
character”. As a rule, a pause of „receiving timeout“ + 150 ms between
frames is sufficient.