ifm electronic JN2100 v.2.0 - Manual (Page 8)

Inclination sensor JN
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● Status and error indication via LED (to CiA DR-303-3)
● In addition to the CiA DS-301 functionality there are more manufacturer and
profile-specific characteristics:
– Setting of the node ID and the baud rate via OD
– Freely configurable limit frequency (digital filter)
7.2 Set-up
The CANopen standard CiA301 defines three possible states for sensor nodes�
Pre-operational
In the pre-operational state no PDO messages (process data) can be transmitted�
The pre-operational state is used to set the sensor parameters or as standby
mode�
Operational
In the operational state all communication services are carried out� The operational
state is used to exchange the process data while in operation�
Stopped
In the stopped state only NMT messages (network management) are possible�
This allows almost complete separation of redundant or faulty sensors from the
bus�
The master or network manager can request the sensor via NMT messages to
change the state accordingly�
Inclination sensors are shipped from ifm electronic with the node ID 10 and a baud rate of
125 Kbits/s�
7.3 Communication types of the process data object (PDO)
Individual check via a remote transmit-request telegram (RTR)
The TPDO can be checked at any time by transmitting a remote transmit-request
telegram� This is possible in all operating modes of the inclination sensor�
7.3.1 Cyclical operating mode
The cyclical transmission of the TPDO is activated if the entry 1800h/05h
(interval time in milliseconds) contains a value greater than 0� To do so, the
entry 1800h/02h (transmission type) must contain the value 254 (asynchronous,
manufacturer-specific)� In the "operational" state the inclination sensor then
cyclically transmits the TPDO1 with the set duration of time�