Siemens SIMATIC PN/CAN LINK

New properties/functions
3.2 Changes compared to the previous version
SIMATIC PN/CAN LINK
18 Operating Instructions, 03/2022, A5E39895388-AC
Implementation of the 0x1F82 object - NMT request
The object 0x1F82 NMT request is accessible from another CANopen device via the CANopen
network upon RD-SDO request. Contrary to the definition in the CiA standard "CiA 302 Part 2",
this object is implemented read-only. Write access is not permitted. When the manager itself
wants to read data of this object, it must use the RDREC instruction with data record number
0x211 for this.
Note
This functionality is only available in the "CANopen Manager" operating mode.
It returns an array of 127 bytes for the status of the node ID from 1 to 127.
RET ARRAY[0] = Status of node 1
RET ARRAY[1] = Status of node 2
...
RET ARRAY[126] = Status of node 127
Note
Reading from 0x1F82OD with the SDO command only returns a status
byte of a node instead
of an array of bytes. For each node, therefore, an SDO command must be sent with the ID of
the requested node as an input parameter.
The status of a node can have the following values (according to CiA standard "CiA 302 Part
2"):
• 0 = unknown state or NMT/BOOTUP
• 1 = node missing
• 4 = NMT/STOPPED
• 5 = NMT/OPERATIONAL
• 127 = NMT/PRE-OPERATIONAL