Lenze L-force I/O System 1000 - Manual (Page 88)

L-force Controls | I/O System 1000
Networking via CAN system bus
Network management (NMT)
88
L
2.0 EN - 11/2010
7.4.2 Telegram structure
[7.1] Telegram for the change-over in the communication phase
The telegram for the network management contains the identifier and the command from
the user data which consists of the command byte and the node address.
To be able to change over between the different communication phases, telegrams with
identifier 0 and 2 bytes of user data are used.
A change-over between communication phases throughout the network can only be
carried out by the network master (e.g. controller).
Identifier
Value = 0
11 bits
User data
Only contains a command
2 bytes

Note!
You must switch to the "Operational" state to be able to communicate via
process data!
Example:
If for instance all nodes connected to the bus are to be switched from the "Pre-
Operational" communication status to the "Operational" communication state
via the CAN master, the identifier and user data in the transmission telegram
must be set as follows:
• Identifier: 00 (broadcast telegram)
• User data: 0100 (hex)