Starting up the device
Leuze electronic
ODS 9
45
7.4.2
IO-Link process data
Process data format
• Profile: SSP4 (Mixed Measuring Sensor, Switching Measuring Sensor, Disable function)
• M-sequence TYPE_2_V
• PDIn (Sensor -> Master): 32 bits (PDI32.INT16_INT8, 8 status bits, 8 scale bits, 16 measurement value
bits)
• PDOut (Master -> Sensor): 8 control input bits (PDO8.BOOL1)
Status bits
Tab. 7.3:
Status bits
Bit
7
6
6
4
3
2
1
0
Value
T
0
W
S
M
0
SSC2
SSC1
0
Reserved, unassigned bits (bit 2 and bit 6) are 0; initialization state is also 0
M
1: measurement operation
0: during start-up, teaching, deactivation
S
1: signal OK, reception signal is sufficient for measurement value output
SSC1
SSC2
Internally calculated switching states
1: Active
T
Toggle bit; toggles after a measurement value change due to a trigger edge
W
1: warning; e.g., weak reception signal
During measurement operation, the measurement value is susceptible to interference. The
cause for the warning can be read out in ExtStatus Bit2:4.
Scale bits
Resolution and scaling:
• Measurement value*10
Scale
[m]
• Standard resolution (Std): 0xFC = -4 (1/10 mm)
• High resolution (HR): 0xFB = -5 (1/100 mm)
Tab. 7.4:
Scale bits
15
14
13
12
11
10
9
8
Measurement values
16-bit measurement value: distance to the object – between lower and upper limit of the measurement
range – in mm. Maximum -32000 … +32000.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Special values:
• No measurement values (No Measurement Data): 32764
• Upper limit of the measurement range exceeded (Out of Range (+)): 32760
• Lower limit of the measurement range exceeded (Out of Range (-)): -32760