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BIS V-6111 CC-Link
Processor unit
39
english
Description of the Code Present (CP) and Multiple Tag (MT) bits
CP MT Meaning
0
0
No tag in the field
1
0
Exactly one tag in the field. Automatic reading is OK (if configured).
0
1
More than one data carrier is in the field. They cannot be processed.
1
1
Does not occur.
Communication between the controlling system and processor unit is defined by a sequence
protocol. Communication between controlling system and processor unit is implemented using
the control bit in the RX/RY-point buffer.
Basic sequence
1. The controller sends a command designator to the processor unit in the output buffer with
the AV bit (RYm0) set.
The AV bit tells the processor unit that a job is beginning and the transmitted data is valid.
2. The processor unit accepts the job and confirms the job by setting the AA bit (RXm1) in the
input buffer.
3. If additional data needs to be exchanged for the job, readiness for additional data exchange
is indicated by inverting the TI (RYm6) and TO (RXm5) toggle bits.
4. The processor unit has correctly executed the job and sets the AE bit (RXm2) in the RX
buffer.
5. The controller has accepted all data. The AV bit (RYm0) in the RX buffer is reset.
6. The processor unit resets all the control bits set in the RX buffer during the job
(AA bit, AE bit). The processor unit is ready for the next job.
Note
All specifications are typical values. Deviations are possible depending on the
application and combination of R/W head and data carrier.
The specifications apply to static operation; no CRC_16 data checking.
All specified write/read times refer to communication between the data carrier and
read/write head.
The times for data communication between the processor unit and the controlling
system are not included.
Mifare
Read times Data carrier with 16 bytes per block
Data carrier detection
≤ 20 ms
Read bytes 0 to 15
≤ 25 ms
for each additional start of a 16-byte block
≤ 10 ms
Write times Data carrier with 16 bytes per block
Data carrier detection
≤ 20 ms
Write bytes 0 to 15
≤ 60 ms
for each additional start of a 16-byte block
≤ 30 ms
Communication
Read/write times
For read/write
heads BIS VM
7
Device Function
