Supported Objects 33
Doc.Id. HMSI-216-117
CM CANopen Module for SIMATIC S7-1200
Doc.Rev. 1.00
Request NMT, 1F82h
Each node on the CANopen network can be controlled individually from the PLC by sending this ob-
ject. The subindex indicates what nodes the request affects:
The desired state is given as a numeric value when writing to or reading from the local object dictionary:
The entire network can be started with one command (subindex 128)
Examples
• Node 5 should be transferred to the OPERATIONAL state:
An SDO write access with the value 5 is executed to object 1F82h subindex 5 in the local object
dictionary.
• 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 subindex 128 in the local
object dictionary.
subindex Description
0 Largest subindex supported (128)
i (with i = 1...127) Request NMT Service for the slave with Node-ID i.
128 Request NMT Service for all nodes
Value Write access Read access
0 - NMT state unknown. The node is not configured or otherwise not part of
the network.
1 - CANopen device is missing. The node at this Node-ID is configured but
not available on the network.
4 STOP remote node NMT state STOPPED
5 START remote node NMT state OPERATIONAL
6 RESET NODE -
7 RESET COMMUNICATION -
127 Enter PRE-OPERATIONAL NMT state PRE-OPERATIONAL
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