migra Ethernet/IP
Large Format, Graphics Compatible Display with Ethernet/IP Interface
Page 18
microSYST Systemelectronic GmbH, Am Gewerbepark 11, 92670 Windischeschenbach
+49 9681 91960-0,
+49 9681 91960-10, [email protected], www.microsyst.de
3.9 Displays with a Vertical Resolution > 64 Pixels
If a display has a vertical resolution of more than 64 pixels, two
controller boards are integrated. The first board controls the module
lines 1 to 4. The second board controls the remaining lines.
Example
: Large format display with a resolution of 3x6 display modules
1
Controller board 1
2
3
4
Controller board 2
5
6
There are two possibilities to control the large format display:
1. The controller boards of the large format display are
accessed separately (with two different addresses). Bit 0 of
the Byte “FC” must be set (see chapter “Header”).
Example: Querying graphics
Transmit frame:
02 8
1
80 8
1
1B 47 2B 30 30 30 03
Wait for response:
02 80 81 80 30 03
Transmit frame:
02 8
2
80 8
1
1B 47 2B 30 30 30 03
Wait for response:
02 80 82 80 30 03
2. The large format display is accessed with one address. Bit 0
of the header byte “FC” must not be set (see chapter
“Header”). Then, all controller boards evaluate the frame,
not depending on the address. However, no response frame
is transmitted to the master. Therefore, there must be taken
a break after frame transmission (see chapter “Online
Frame Layout”).
Example: Querying graphics
Transmit frame:
02 8
1
80 8
0
1B 47 2B 30 30 30 03
Take a break:
see chapter “Online Frame Layout”
