Filter
Top Products
CANopen Network Interface
1606218 02 08/2006 55
"Pre-
Operational"
The device goes into the "Pre-Operational" state:
after the "Init" state,
on receiving the NMT "ENTER PRE-OPERATIONAL" indication if it was in the
"Operational" or "Stopped" state.
When the device is in this state, its configuration can be modified. However, only
SDOs can be used to read or write device-related data.
When configuration is complete, the device goes into one of the following states on
receiving the corresponding indication:
"Stopped" on receiving the NMT "STOP REMOTE NODE" indication.
"Operational" on receiving the NMT "START REMOTE NODE" indication.
"Stopped" The device goes into the "Stopped" state on receiving the "STOP REMOTE NODE"
indication (NMT service) if it was in "Pre-Operational" or "Operational" state.
In this state, the device cannot be configured. No service is available to read and
write device-related data (SDO). Only the slave monitoring function ("Node-
Guarding" or "Heartbeat") remains active.
"Operational" The device goes into the "Operational" state if it was in the "Pre-Operational" or
"Stopped" state on receiving "START REMOTE NODE" indication.
When the CANopen network is started using the NMT "START REMOTE NODE"
services, all device functionalities can be used. Communication can be carried out
via PDOs or SDOs.
RISK OF UNINTENDED DEVICE OPERATION
Do not change the device configuration when it is in "Operational" state. Changing
the equipment configuration while it is in the "Operational" state may result in the
device behaving in an unexpected manner and/or in equipment damage or injury
to personnel. If the device needs to be reconfigured, put it in the "Pre-Operational"
state and check that this has been done correctly before proceeding to modify the
configuration.
Failure to follow this instruction can result in death, serious injury, or
equipment damage.
WARNING