RS485 serial lines

LAN-RING industrial switches and IPLOG PLCs are equipped with a wide range of serial interfaces. In the case of switches, these are mainly RS485 buses, which can be configured in a wide range of operating modes.

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The following rules apply to data transmission of alarm systems designed according to EN 50131-1:

• all frames are marked with VLAN headers according to IEEE 802.1Q
• all connected systems have a defined bandwidth (protection against DDoS attacks)
• Alarm system data has its QoS bits set to the highest priority
• it is recommended to monitor the activity of all ports of the transmission system using the SNMP protocol