User's Manual

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Configuration
CRC_16 data check If this parameter is set, the data from the data carrier are sent along with a 2-byte CRC_16
check sum. This leaves only 3 bytes of user data remaining. If a correct CRC_16 check
sum is recognized, it will be output in bytes 1 and 2. If a CRC error is detected, 00
Hex
, 00
Hex
is sent instead of the check sum. To use the CRC_16 procedure, the data carriers must
first be initialized from the BIS L-60_ _ processor using the BISCOMRW.EXE PC software.
The CRC_16 data check can only be carried out using type BIS L-10X-05/L data carriers.
The CRC_16 data check is only possible with model BIS L-10_-05/L data carriers.
If model BIS L-10_-05 data carriers are used, the "BIS L-10_-05" must be activated.
Data integrity can be increased using the data compare counter, in which the processor reads
out the data from the data carrier multiple times within a read cycle. The processor stores and
comparers the data. If the data carrier has been correctly recognized, the processor releases
the data. From 1 to 10 reads can be set in the "Data compare counter" field. The default
setting is 2, but when the specified installation conditions cannot be met this number may be
increased to ensure data integrity.
If this function is activated, the serial number of the data carrier is constantly output as long
as the CT Present signal is active. The function is only possible in terminal mode.
In order to limit the amount of data on the interface a repetition rate (0...255s) can be entered.
During this time the output is not refreshed if no new data carrier has been detected.
In terminal mode the default is for <CR> <LF> to be sent as an end detection. Alternately,
in this mode you can send max. 5 characters as a start detection and max. 5 characters
as end detection. The value 00
Hex
is not allowed as a start or end detection. If in the
configuration the processor recognizes the value 00
Hex
, it interprets this as the termination
for the desired start or end detection.
Continuous sending
of serial number
Start/end detection
☞
BIS L-10_-05
Data comparison
counter
L-400_835996_0803_E.p65
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Protocol Sequence
Terminal mode
When a data carrier enters the read zone of the processor, the data are immediately sent
to the terminal. The time for detecting the data carrier is approx. 45 ms.
The data carrier data are displayed on the terminal screen. The terminal can only send the
ASCII character 'SYN' (16 hex) to the processor to generate a software reset.
Example: Output 40 bits of data carrier data to the terminal
Data carrier data 2 1 A B C D E F 0 8 (hex)
0010 0001 1010 1011 1100 1101 1110 1111 0000 1000 (binary)
Sent characters: 21ABCDEF08_'FN''CR''LF'
i.e., 12 characters are sent:
1. - 10. characters Data carrier data (see above)
11. character Space <SP>
12. character Error number
13. character Carriage Return 0D (Hex)
14. character Line Feed 0A (Hex)
Error No. Error Cause
Hex ASCII Description
30 '0' No Error
45 'E' CRC-Error The CRC on the data carrier does not agree with the
calculated CRC for the read data.
Error numbers