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7.5.2 Switching Signal Configuration (SSC)
The BML has 4 switching signals integrated into it. Each
switching signal is written by the parameters SSC
Parameter and SSC Configuration . SSC Parameter
specifies the position of setpoints SP1 and SP2. SSC
Configuration specifies the switching function. The BML
has implemented the switching signals as Single Point
Mode, Window Mode and Two Point Mode according to
the Smart Sensor Profile.
Parameters Subindex Name Size Access Values
SSC Parameter
SSC1: 0x003C (60)
SSC2: 0x003E (62)
SSC3: 0x4000 (16384)
SSC4: 0x4002 (16386)
1 Setpoint 1 (SP1) 4 bytes Read/Write Position of SP1 [μm]
2 Setpoint 2 (SP2) 4 bytes Read/Write
Position of SP2 [μm]
(the position of SP2 must be lower than
that of SP1)
SSC Configuration
SSC1: 0x003D (61)
SSC2: 0x003F (63)
SSC3: 0x4001 (16385)
SSC4: 0x4003 (16387)
1 Logic 1 byte Read/Write 0 = Normally open (NO, default)
1 = Normally closed (NC)
2 Mode 1 byte Read/Write
0 = Deactivated (default)
2 = Single Point Mode
2 = Window Mode
2 = Two Point Mode
3 Hysteresis 2 bytes Read/Write 100…30000 μm (default: 100 µm)
Tab. 7-8: Parameter data SSC
Switching behavior
Logic
Normally open (NO) Normally closed (NC)
Mode
Single
Point
SSC
SP1
ON OFF Measured value
Hysteresis
SSC
SP1
OFF ON Measured value
Hysteresis
Window
SP2 SP1
ON ON OFF
WINDOW
SSC
Measured
value
Hysteresis Hysteresis
SSC
SP2 SP1
ON ON OFF
WINDOW
Measured
value
Hysteresis Hysteresis
Two
Point
SSC
SP2 SP1
ON OFF
Measured value
Hysteresis
SSC
SP2 SP1
OFF ON
Measured value
Hysteresis
Two Point mode does not take into account the
Hysteresis
parameter. This mode is similar to Single Point mode, and
the hysteresis is defined by the distance between SP1 and
SP2.
The measurement value configuration must be
finished before starting the switching signal
configuration, (see Sec. 7.5.1)!
In SIO mode SSC1 and SSC2 are set to the
outputs OUT1 and OUT2. For configuration of
OUT1 and OUT2 see Section 7.5.4.
7
IO-Link Smart Sensor Profile Ed. 2 (BML SL1-ALZ1-UE/MZZ-_U1L-…) (continued)
BML SL1-ALZ _ -U_ ZZ- _ U1L - _ _ _ _
Absolute magnetic encoder system
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