Request NMT, 1F82h
Each node on the CANopen network can be controlled individually from the fieldbus application by
sending this object. The sub-index indicates what nodes the request affects:
Sub-Index
Description
0
Largest sub-index supported (128)
i (with i = 1...127)
Request NMT Service for the slave with Node ID i.
128
Request NMT Service for all nodes
The desired state is given as a numeric value when writing to or reading from the local object dictionary:
Value
State
4
READY
5
OPERATIONAL
6
RESET NODE
7
RESET COMMUNICATION
127
PRE-OPERATIONAL
The entire network can be started with one command (sub-index 128)
Examples
•
Node 5 should be transferred to the OPERATIONAL state:
An SDO write access with the value 5 is executed to object 1F82h sub-index 5 in the local object
dictionary. When an NMT command is sent, data is cleared.
•
All the nodes in the network should be transferred to the PRE-OPERATIONAL state:
An SDO write access with the value 127 is executed to object 1F82h sub-index 128 in the local
object dictionary.
Anybus X-gateway CANopen - PROFIBUS
Doc.Rev. 1.02
CANopen Supported Objects 36
Doc.Id. SCM-1200-080
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