Technosoft 2016
43
iPOS4808 MY-CAN-STO/-CAT-STO Technical Reference
Multi-turn frame
m+n m+n-1 m+n-2 m+n-3 m+n-4
n+4
n+3
n+2
n+1
DT+
CK+
T
T/2
1
2
3
4
5
m-3
m-2
m-1
m
MSB
LSB
m multi-turn bits
n
n-1
n-2
n-3
n-4
4
3
2
1
m+1
m+2
m+3
m+4
m+5
m+n-3 m+n-2 m+n-1
m+n
MSB
LSB
n single-turn bits
CK- and DT- signals have the same form with CK+ and DT+, but with opposite polarity.
3.9.16 BiSS Encoder Interface
Min.
Typ.
Max.
Units
Differential mode compliance (CLOCK,
DATA)
TIA/EIA-422
CLOCK Output voltage
Differential; 50Ω differential load
2.0
2.5
5.0
V
Common-mode, referenced to GND
2.3
2.5
2.7
CLOCK frequency
Software selectable
1000, 2000, 3000, 4000
kHz
DATA Input hysteresis
Differential mode
±
0.1
±
0.2
±
0.5
V
Data input impedance
Termination resistor on-board
120
Ω
DATA Input common mode range
Referenced to GND
-7
+12
V
Absolute maximum, surge (duration
≤
1s)
†
-25
+25
Software selectable
Single-turn / Multi-turn
Counting direction
DATA resolution
Total resolution (single turn or single turn + multi turn)
31
bit
Protocol
BiSS C mode (sensor mode)
3.9.17 Analog 0…5V Inputs (REF, FDBK)
Min.
Typ.
Max.
Units
Input voltage
Operational range
0
5
V
Absolute maximum values, continuous
-12
+18
Absolute maximum, surge (duration
≤
1s)
†
±36
Input impedance
To GND
30
kΩ
Resolution
12
bits
Integral linearity
±2
bits
Offset error
±2
±10
bits
Gain error
±1%
±3%
% FS
Bandwidth (-3dB)
Software selectable
0
1
kHz
ESD protection
Human body model
±2
kV
3.9.18 RS-232
Min.
Typ.
Max.
Units
Standards compliance
TIA/EIA-232-C
Bit rate
Depending on software settings
9600
115200 Baud
Short-circuit protection
232TX short to GND
Guaranteed
ESD protection
Human body model
±2
kV
3.9.19 CAN-Bus (for CAN drives)
Min.
Typ.
Max.
Units
Compliance
ISO11898, CiA-301v4.2,
CiA 305 v2.2.13, 402v3.0
Bit rate
Software selectable
125
1000
125
Bus length
1Mbps
25
m
500Kbps
100
≤ 250Kbps
250
Resistor
Between CAN-Hi, CAN-Lo
none on-board
Node addressing
Hardware: by H/W pins
1 ÷ 127 & 255 (LSS non-configured)
(CANopen);
1-127 & 255 (TMLCAN)
Software
1 ÷ 127 (CANopen); 1- 255 (TMLCAN)
Voltage, CAN-Hi or CAN-Lo to GND
-26
26
V
ESD protection
Human body model
±15
kV
1
“FS” stands for “Full Scale”