
Software
16
CANio 250 Quickstart Manual, version 1.2
5.1.8 Heartbeat message
With this CAN message, the CANio 250 signals that it is operational. This
message is transmitted cyclically.
CAN identifier
Data field (length = 1)
Byte 0
Value
Description
0x700 + node
number of the
CANio 250
0x00
Bootup
– Message:
after power-on, the CANio 250 logs on to the CAN bus
with this message
0x05
„operational“:
the CANio 250 is operational:
Process data can be received and transmitted
It can be configured
Emergency messages are generated: see 5.1.9
Heartbeat messages are generated
The state machine of the CANio 250 can be con-
trolled by the command message: see 5.1.13
0x04
„stopped“:
Process data is not received nor transmitted
It can’t be configured
No emergency messages are generated
Heartbeat messages are generated
The state machine of the CANio 250 can be con-
trolled by the command message.
0x7F
„preoperational“:
Process data is not received nor transmitted
It can be configured
Emergency messages are generated: see 5.1.9
Heartbeat messages are generated
The state machine of the CANio 250 can be con-
trolled by the command message.
Note:
After Power On or an internal Reset the
Bootup
message is transmitted.
The tr
ansmission of the Bootup message can’t be switched off.