Lenze DDS System bus CAN for PLC - Manual (Page 18)

System bus (CAN) for Lenze PLC devices
General information
2−6
l
PLC−Systembus EN 2.0
2.5 Network management (NMT)
The CAN telegram for the network management is structured as follows:
11bit 2 bytes user data
Identifier
Command Device address
00000000000
·
By means of this telegram the master can carry out state changes for the entire CAN network.
Byte 1: command
Command
(hex)
Network status
after change
Information
01 Operational The PLC can receive parameter and process data.
02 Stopped
The PLC can receive network management telegrams, parameter and process data, however, cannot be
received.
80 Pre−operational The PLC can receive parameter data. Process data, however, are ignored.
81
Initialisation
Reset rode: Changes with regard to the communication−relevant parameters of the system bus (e. g. CAN
address, CAN baud rate, etc.) only are accepted after a reset node.
82
Byte 2: device address
Device address Information
0 All nodes on the bus are addressed. By this, a state change can be carried out simultaneously for all devices.
1...63 Node address of the node for which a state change is to be effected.