Siko MSA213C, Additional To The Original Installation Instructions, Page: 17 / 28

MSA213C-S (BiSS/C)
BiSS C (bidirectional) interface English
MSA213C-S (BiSS/C) · Date 24.05.2022 · Art. No. 90036 · Mod. status 111/22
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Data format
The sensor uses the BP3 standard with 25 bit position, 1 bit plausibility
error, 1 bit sensor/band distance warning and 6 bit CRC. The data are out-
put in a 33-bit format right-justified.
Feature Technical data
Position bit length 25 bit (1 bit sign, 24 bit value)
Error bit length 1 bit, plausibility error position
Warning bit length 1 bit, sensor band distance warning
CRC length 6 bit (CRC polynominal 0x43)
MA
SLO
CDM
t
tm
t
Start CDS ACK ... Busy ... MSB
E
LSB
W
CRC
MSB
CRC
LSB
Error bit signification
In addition to the 25-bit position data, error states are signaled with two
additional bits. The bits are automatically reset if the limit values are
observed.
Bit = 0 Bit = 1
Error bit 1
(Bit 26)
Plausibility error. The posi-
tion value output via the
BiSS C interface is invalid.
No plausibility error
Error bit 2
(Bit 27)
Sensor/tape distance warn-
ing
The sensor is correctly
mounted over the magnetic
tape.
Timing
Feature Technical data
Start-up time <250 ms
Sensor measurement cycle time 40 µs
Maximum clock frequency 10 MHz, depending on cable length
BiSS C Timeout Adaptive
Maximum BiSS C frame repeti-
tion rate
50 µs (at 10 MHz Clock Cycle Time)