Jetter JC-120MC, Руководство пользователя

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242 Jetter AG
10 Programming
Please note that the Jetter Ethernet system bus operates with multicasts
(multipoint connections). If you couple the Jetter Ethernet system bus with
your local network, you have to filter out unwanted multicasts by a router.
As an alternative, the function
JetSync blockage
(see page 278) can be
used, too.
Technical specifications of cyclic data interchange via Jetter Ethernet system
bus:
 Usage of multicast frames
 Reserved multicast groups: 255

Multicast groups available to the user: 0 ... 254
 IP addresses for multicasts: 239.192.0.0 + multicast group

MAC address for multicasts: 01:00:5E:40:00:00 + multicast group
 Maximum size of user data in a publication/subscription: 256 byte
Topic Page
Publish/subscribe ........................................................................................ 243
Publish/subscribe - Registers ..................................................................... 245
Network registers, network inputs and outputs ........................................... 251
Multicast in other
networks
Technical specifications
Contents