Inxpect SRE 200 Series - 3.2 Control units

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3. Get to know Inxpect SRE 200 Series

3.1.6 Control unit - machinery communication

The control units communicate with the machinery via I/O (see "Control unit inputs" on page21 and "Control unit

outputs" on page23).

Moreover, according to the model-type, the control unit is provided with:

a safe communication on a Fieldbus interface. The Fieldbus interface allows the control unit to

communicate in real-time with the PLC of the machinery to send information about the system to the PLC

(e.g., the position of the detected target) or to receive information from the PLC (e.g., to change the

configuration dynamically). For details, see "Fieldbus communication (PROFIsafe)" on page30 or see

"Fieldbus communication (Safety over EtherCAT® - FSoE)" on page32.

an Ethernet port that allows unsafe communication on a MODBUS interface (see "MODBUS

communication" on page33).

3.1.7 Applications

Inxpect SRE 200 Series integrates with the machinery control system: when performing safety functions or

detecting failures, Inxpect SRE 200 Series deactivates the safety outputs and keeps them deactivated, so the

control system can put the area into a safe condition and/or prevent restarting of the machinery.

In the absence of other control systems, Inxpect SRE 200 Series can be connected to the devices that control the

power supply or machinery start-up.

Inxpect SRE 200 Series does not perform normal machinery control functions.

For connection examples, see "Electrical connections" on page111.

3.2 Control units

3.2.1 Interfaces

The Inxpect SRE 200 Series supports different control units. The main difference among them is the connection

ports, and therefore the communication interfaces available, and the presence of the microSD slot:

Model Type micro-USB port Ethernet port Fieldbus port microSD slot

Type A C201A -PNS x

x (PROFIsafe) -

C201A -F x

x (FSoE) -

C202A - x

- -

C203A - x - - -

Type B C201B -P x x x (PROFIsafe) x

C201B -F x x x (FSoE) x

C202B - x x - x

C203B - x - - x

3.2.2 Communication architecture

According to the model-type, this is the communication architecture between the control unit, PLC and PC.