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3.Operational Description
In network installations KSR-01IP can be used as KNX IP area coupler or KNX IP
line coupler. With its default settings KSR-01IP operates as is supposed to.
3.1 IP Coupler Application
When KSR-01IP receives telegrams (for example during commissioning) that use
physical addresses as destination addresses, it compares the physical addresses
of the receiver with its own physical address and decides on that whether it has to
route the telegrams or not.
When KSR-01IP receives telegrams that use group addresses as destination
addresses, it reacts in accordance with the parameter settings. During normal
operation (with default settings), KSR-01IP only routes telegrams whose group
addresses are entered in the filter table.
If KSR-01IP routes a telegram and does not receive an acknowledgement, or if a bus
device discovers a transmission error, the coupler repeats telegrams up to three
times (depending on the corresponding parameter that is set by ETS). With the
parameters „Repetitions if errors...“, this function can be set separately for each
line. It is recommended to use the default parameter setting.
IP Coupler is designed for use in 10/100 BaseT networks compliant to IEEE802.3.
The AutoSensing function sets the baud rate (10 Mbit or 100 Mbit) automatically. IP
address can be received from a DHCP server. For this, the ETS automatic
assignment setting of the IP address is required. If no DHCP server is found by this
setting KSR-01IP starts an AutoIP procedure and autonomously assigns the IP
address. The IP address that KSR-01IP receives during its start-up (via DHCP or
AutoIP) is retained until next start-up (e.g. due to power off or reprogramming). If the
IP address of the KSR-01IP is supposed to have a fixed assignment a fixed IP
address (as well as subnet mask and standard gateway) can be set by ETS.
Note: ETS does not provide an unload procedure for applications.
3.2 IP Network
KSR-01IP sends telegrams from/to the TP network to/from the IP network in
accordance with the KNXnet/IP protocol specification. According to the default
setting these telegrams are sent as multicast telegrams to the multicast IP address
224.0.23.12 port 3671. The multicast IP address 224.0.23.12 is the defined address
for the KNXnet/IP by KNX Association in conjunction with the IANA. It is
recommended to use this default address as defined. Only if it becomes necessary
due to the existing network, the address can be changed as shown in chapter 4.3
KNX Multicast Address. Important notes:
● All KNX IP devices that are intended to communicate with each other via IP must
have the same IP multicast address.
