
Communication via CAN bus (CANopen and CANopen Safety)
IKM360M
Date: 21.01.2021
Art. No. 90444
Mod. status 222/20
Page 11 of 58
Fig. 3: NMT status diagram
5.2.1.1
NMT communication states
NMT Status INITIALIZATION
The device is not involved in the bus actions in this state. All hardware and software
components are initialized. This state is attained after switching on the device or after receipt
of the command code 81h ("Reset node") of the own or global addresses. Following receipt of
the command code 82h ("Reset Communication"), the inclinometer will enter the
initialization stage as well. But only hardware and software associated with CAN
communication will be reinitialized. The device signals automatically the completion of
initialization by sending a boot-up message. As soon as the boot-up message was sent
successfully, the device will enter the "PRE-OPERATIONAL" status.
NMT Status PRE-OPERATIONAL
Parameterization data (SDO) can be exchanged in the pre-operational mode. However, no
process data (PDO's) is transferred.
NMT Status OPERATIONAL
The exchange of process data is enabled as well. However, COB ID and Transmit PDO Mapping
parameters can no longer be changed in this status.
NMT Status STOPPED
Communication is stopped except for heartbeat and node guarding Only NMT communication
is enabled.
Initialization
CAN-communication
Pre-Operational
Operational
Stopped
BootUp-Message
1
2
2
3
3
4
4
4
1
Re-initialization
CAN-card
5
5
5
Init
Power on or Software reset