BIS V-6107 TCP/IP, USB
Processor Unit
38
The CRC check is a procedure for determining a check value for data in order to be able to
recognize transmission errors. If the CRC check is enabled, a status message will be sent when
a CRC error is detected.
Enabled/Disabled
Note
The CRC check function is only supported by read/write heads in the BIS C, BIS VL,
and BIS VM series.
Checksum
M and L system:
The checksum is written to the data carrier as 2 bytes of information. 2 bytes per block are lost.
This leaves 14 bytes per block available. The usable number of bytes can be found in the fol-
lowing table.
C system:
The checksum is written to the data carrier as 2 bytes of information per page. 2 bytes per page
are lost, i.e. the page size is 30 bytes or 62 bytes depending on the data carrier type.
The number of usable bytes thus decreases when using the checksum.
Balluff data carrier type
Memory capacity
Usable bytes for CRC_16
BIS M-1_ _-
01
752 bytes
658 bytes
BIS M-1_ _-
02
2000 bytes
1750 bytes
BIS M-1_ _-
03
112 bytes
98 bytes
BIS M-1_ _-
04
256 bytes
224 bytes
BIS M-1_ _-
05
224 bytes
196 bytes
BIS M-1_ _-
06
288 bytes
252 bytes
BIS M-1_ _-
07
992 bytes
868 bytes
BIS M-1_ _-
08
160 bytes
140 bytes
BIS M-1_ _-
09
32 bytes
28 bytes
BIS M-1_ _-
10
736 bytes
644 bytes
BIS M-1_ _-
11
8192 bytes
7168 bytes
BIS M-1_ _-
13
32786 bytes
28672 bytes
BIS M-1_ _-
14
65536 bytes
57344 bytes
BIS M-1_ _-
15
131072 bytes
114688 bytes
BIS M-1_ _-
20
8192 bytes
7168 bytes
BIS L-1_ _-
01
192 bytes
168 bytes
BIS L-2_ _-
03
5 bytes (read-only)
—
BIS L-1_ _-
05
192 bytes
168 bytes
BIS C-1_ _-
04
511 bytes
450 bytes
BIS C-1_ _-
05
1023 bytes
930 bytes
BIS C-1_ _-
11
2047 bytes
1922 bytes
BIS C-1_ _-
32
8192 bytes
7936 bytes
Cyclic
Redundancy
Check
8
Parameter setting
Summary of Contents for BIS V-6107
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