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RS485 Buses

Industrial switches LAN-RING and PLCs IPLOG offer a variety of operating modes for serial buses interfaces. In the switches are primarily found RS485 buses, which can be configured to a wide range of operating modes.

Table 1

When transmitting data from alarm systems designed in accordance with EN 50131-1 the following rules apply:

  • All frames are identified with VLAN headers in accordance with IEEE 802.1Q.
  • All connected systems have a defined bandwidth (protection from DDoS attacks).
  • Alarm system data have the QoS bits set for the highest priority.
  • The activity on all ports in the transmission system should be monitored via SNMP protocol.