12
2 Product description
Safety output via 2 wires (digital output DO and test pulse output Y1)
−
Safety digital outputs (2P switching) up to PL e, for controlling
e.g. interlocks with 2-channel locking functions or for
2-channel control of SRB-E-301ST safety relay modules
−
Tested outputs, short-circuit and overload protected
2.1.4
Diagnostic input / FB interface
The SFB-PN-IRT-8M12-IOP has one diagnostic input at each of the 8 device ports
X0 - X7 for status signals of the connected safety switchgear.
At the 4 device ports X4 - X7 a FB interface is additionally integrated on this input.
The non-safe signals from command and signalling devices, e.g. the BDF200-FB,
can be transmitted via the single-wire FB-Interface interface.
FB interface automatically detects if a safety switchgear with integrated
FB interface is connected.
2.1.5
PROFINET IO communication
PROFINET IO PROFINET IO is an open communication protocol that complies
with IEC 61784-2. The communication protocol is based on Ethernet.
Data is exchanged between the control unit, referred to as the PROFINET IO
Controller, and connected users, which are called PROFINET IO devices.
Communication is based on a full-duplex Ethernet network running at
100 Mbit/s. IO controllers and IO devices communicate by means of Ethernet
telegrams.
Devices exchange data cyclically based on the provider-consumer principle.
Devices function as receiver (consumer) and transmitter (provider) at the same
time.
The IO controller sends output data to the IO devices and receives input data
from the IO devices. The IO devices send input data and receive output data.
Other components of the communication protocol include telegrams in form of
acyclic communication for parameter transfer and read/write access to
the I&M data or manufacturer-specific features.
2.1.6
PROFIsafe communication
PROFIsafe is a functionally safe expansion of standard communication via
PROFINET or PROFIBUS. Communication based on PROFIsafe is safe
against alteration, transmission errors and changes to the telegram sequence, etc.
The SFB-PN Safety Field Box is a PROFIsafe module and complies with
"PROFIsafe – Profile for Safety Technology on PROFIBUS DP and
PROFINET IO”.
The module establishes a safe communication to a PROFIsafe master.
