Pepperl+Fuchs VBG-PN-K30-D-S16, Руководство пользователя

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AS-i 3.0 PROFINET Gateway with integr. Safety Monitor
Safe Link
17. Safe Link
17.1 General introduction
Safe Link represents the most efficient and cost-effective way to link safe signals
from multiple AS-i networks.
As for an AS-i linking network, safe linking using potential-free contacts or safe
electronic in- and outputs eliminates expensive and cumbersome wiring. Safe
Link also offers the same system range as a PROFINET controller based on the
PROFIsafe standard without being restricted to a particular system controller.
Safe Link allows up to 1922 safe inputs to be processed in a full configuration of
31 gateways with 62 safe slaves. 31 safe bits per Gateway are provided for cou-
pling, resulting in a total of 961 signals that can be safely coupled.
For Safe Link the Gateways are connected over the Ethernet diagnostics inter-
face (10 Mbit/s, half-duplex) and a switch. In the case of PROFINET and Ether-
NET/IP+Modbus TCP, instead the fieldbus interface can be used for Safe Link.
If the Ethernet interface is used for coupling, devices having different controller
systems (such as PROFIBUS, PROFINET, EtherNet/IP, Modbus, sercos, etc.)
can exchange signals with each other without any additional effort using the
switch.
Since data transmission is based on the sending of multicasts, it must be ensured
that the switch used can process and pass along the corresponding broadcasts.
Ethernet
diagnostics
window
Safe coupling via standard Ethernet
31 x 31 safe coupling slaves