ifm electronic JN2100 v.2.0 - Manual (Page 23)

UK
Inclination sensor JN
23
7.14.2 Heartbeat
Heartbeat is a failure monitoring mechanism which needs no RTR telegrams�
The sensor cyclically transmits a heartbeat message which contains the device
status� The master can monitor these telegrams� Heartbeat is activated as soon
as a value greater than "0" is entered in the register heartbeat interval time
(1017h)�
Heartbeat has a considerable influence on the bus load of the CANopen network - but generates a
bus load which is only half as high as node guarding / life guarding�
7.15 COB IDs
The CAN identifiers of the communication objects are determined according
to the pre-defined connection set with every reset (communication, application
and hardware reset) depending on the set node ID (2000h)�
Communication object Calculation of the COB ID Default value (node ID = 10)
NMT0 h 0h
SYNC 80h 80h
EMCY 80h + node ID 8Ah
TPDO1 180h + node ID 18Ah
Default SDO
(Client
→
server)
580h + node ID 58Ah
Heartbeat 700h + node ID 70Ah
7.16 Status LED (to CiA DR-303-3)
The integrated LEDs indicate the current device status (Run LED, green) and CAN
communication errors (error LED, red)�
LED Description
Green
Off
The device is in the state "reset" or no power supply is available
Flashing The device is in the state "pre-operational"
Brief lighting once The device is in the state "stopped"
On The device is in the state "operational"
Red
Off
No error
Brief lighting once Error counter
The CAN controller has reached or exceeded its warning limit
Brief lighting twice The device has detected the failure of the guarding master
(node guard event)
On The device is in the state "bus off"