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Temposonics
®
E-Series CANopen
Operation Manual
27
5.5.2 Error control service
Through error control services the NMT detects failures in a CAN based network.
When the error control service is enabled the E-Series CANopen sensor transmits a heartbeat message cyclically.
One or more heartbeat consumers receive the indication. The relationship between producer and consumer is configurable
via the object dictionary by SDOs. By default the heartbeat is disabled.
The data byte of the heartbeat message contains the current network management state of the CANopen sensor.
Consider the change of the node ID takes place after a restart of the device or “immediately”.
COB ID
Request /
Respond
DLC
Byte
Description
0
0x700 + Node ID
Tx
1
State
0x00
Boot up
0x04
Stopped
0x05
Operational
0x7F
Pre-operational
Table 7: Heartbeat message