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Operating Modes
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6 Operating Modes
All the ejectors in the SCPSi-L series can be operated in two operating modes:
• Via direct connection to inputs and outputs (standard I/O = SIO) or
• Connection via a communication line (IO-Link)
By default, the ejector always runs in SIO mode, but it can be switched in and out of IO-Link mode by an
IO-Link master at any time.
6.1 SIO Operating Mode
In SIO mode, all input and output signals are connected to a controller, either directly or using intelligent
terminal boxes. For this purpose, in addition to the supply voltage, two input signals and one output sig-
nal should be connected to allow the ejector to communicate with the controller.
The following basic ejector functions are used:
• Inputs
– Suction ON/OFF
– Blow off ON/OFF
• Output
– Feedback 2 (“Part Present” check)
The “Blow off” signal does not have to be used if the ejector is operated with internal time control in
blow off mode. This allows operation on a single port in a configurable terminal box (using 1xDO and
1xDI).
The parameters are set and the internal counters are read out using the operating and display elements.
The energy and process control functions are unavailable in SIO mode.
6.2 IO-Link Operating Mode
When operating the ejector in IO-Link mode (digital communication), the supply voltage, the ground and
the communication line are connected to a controller, either directly or using intelligent terminal boxes.
The communication line for IO-Link (C/Q line) is always connected with an IO-Link master port (point-to-
point connection). It is not possible to connect multiple C/Q lines to a single IO-Link master port.
Connecting the ejector via the IO-Link provides access to a number of additional ejector functions along-
side the basic functions of suction, blow off, feedback, etc. They include:
• The current vacuum level
• Selection of four production profiles
• Errors and warnings
• Ejector system status display
• Access to all parameters
• Functions for energy and process control
So that all the modifiable parameters can be read directly via the higher-level controller, modified and
written back to the ejector.
Evaluation of the condition monitoring and energy monitoring results allows you to draw direct conclu-
sions regarding the current handling cycle and perform trend analysis. The ejector supports the IO-Link re-
vision 1.1 with four bytes of input data and two bytes of output data. It is also compatible with IO-Link
masters that use the 1.0 revision. In this case, one byte of input data and one byte of output data are sup-
ported. The exchange of process data between the IO-Link master and the ejector is cyclical. Parameter
data (acyclical data) is exchanged by the user program in the control unit using communication modules.