Festo SBO***-Q Series, Manual

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4. Commissioning
4-46
Festo P.BE-SBO-Q-EN en 1602e
4.10.1 General information on use of inputs
There are inputs with signal function and other inputs.
Inputs with
signal function These inputs are edge- or condition-controlled, depending
on the evaluation mode. They are constantly read. If the
signals regarding the current operating state are valid, the
corresponding action is carried out immediately. Inputs with
signal function are, for example:
– Trigger signal
– Apply Inputs signal
– Acknowledge Error signal
Other inputs These inputs are condition-controlled, that is, they react to
logic 1 or logic 0. They are read only after a valid “Apply
Inputs signal”.
Example for “normal input”: Preselection check program.
Regardless of the function selected, the internal inputs and
the I/O expansion inputs can be read via the communication
protocols EasyIP, Telnet, Modbus and EtherNet/IP, or in the
check program.
Input I1 has a double function and can be mapped internally
to two different offset addresses:
– Apply Inputs signal FW 1
– Acknowledge Error signal FW 2
For reading input I1, flag word 1 or flag word 2 can be used
(
è
chapter A.6.1)