BIS V-6111 CC-Link
Processor unit
50
english
7. Initializing a data carrier for CRC
The sequence for CRC initialization is similar to a write command. The start address and number
of words must correspond to the maximum volume of data used.
In the example the complete memory area of a data carrier (376 words) is used. 329 words on
the data carrier are available as data words, since 47 words are required for the CRC.
Control
Identification system
1.
Process output buffer
(note sequence):
2.
(note sequence):
0000
hex
Command designator
0012
hex
RXm1
Set AA bit
0001
hex
Start address 0000
hex
RXm5
Invert TO bit
0002
hex
Number of words 0292
hex
RYm0
Set AV bit
3.
Process output buffer:
4.
Process output buffer:
0000
hex
…
000F
hex
Enter first 16 words
0000
hex
…
000F
hex
Copy first 16 words
RYm6
Invert TI bit
RXm5
Invert TO bit
5.
Process output buffer:
6.
Process output buffer:
0000
hex
…
000F
hex
Enter second 16 words
0000
hex
…
000F
hex
Copy second 16 words
RYm6
Invert TI bit
RXm5
Invert TO bit
42.
Process output buffer:
43.
Process output buffer:
0000
hex
…
0002
hex
Enter last words
0000
hex
…
0002
hex
Copy last words
RYm6
Invert TI bit
RXm2
Set AE bit
44.
45.
RYm0
Reset AV bit
RXm1
Reset AA bit
RXm2
Reset AE bit
7
Device Function
