ifm electronic JN2100 v.2.2.0 - Manual (Page 8)

Inclination sensor JN
8
● Status and error indication via LED
● In addition to the basic CANopen functions there are other manufacturer and
profile-specific features:
– setting of the node ID and the baud rate via OD
– configurable limit frequency (digital filter)
7.2 Set-up
The CANopen standard CiA DS-301 defines three possible states for sensor
nodes.
Pre-Operational
The pre-operational state is used to set the sensor parameters or as standby
mode. In the pre-operational state no process data (PDO messages) can be
transmitted.
Operational
The operational state is used to exchange the process data while in operation. In
the operational state all communication services are carried out.
Stopped
The stopped state is used for network management; only NMT messages are
possible.
The master or network manager can request the sensor via NMT messages to
change the state accordingly. This allows almost complete separation of redundant
or faulty sensors from the bus.
7.3 NMT start-up (OD index 1F80h)
The sensor has a selectable start performance. The following three options can be
selected under the index 1F80h:
7.3.1 Slave Only (default) (OD index 1F80h = 0)
The sensor starts in the pre-operational state (0x00h).
7.3.2 NMT start command (OD index 1F80h = 2)
This command is used for CAN bus networks without NMT master. If the sub-
index 0x02h is selected, the sensor starts after a new start as NMT master in the
operational state and sets the other network participants from the pre-operational
into the operational state.
7.3.3 Autostart (OD index 1F80h = 8)
If this command is written under the sub-index 0x08h, the sensor starts
automatically in the operational state after a new start.