BONFIGLIOLI act 401 Betriebsanleitung PDF herunterladen (Seite 43)

42 06/05

4.12 Control parameters

For the monitoring of the system bus and the display of the internal states, two con-

trol parameters are provided. There is a report of the system bus state and a report o

the CAN state via two actual value parameters.

The parameter

Node-State 978 gives information about the Pre-Operational, Opera-

tional, Stopped state. A PDO transfer is only possible in the Operational state. The

state is controlled by the system bus master (PLC / PC / frequency inverter) via NM

telegrams.

The parameter

CAN-State 979 gives information about the state of the physical layer.

If there are transmission errors, the state chan

es from OKAY to WARNING until the

cancellation of the communication with BUS-OFF. After BUS-OFF, the CAN controller is

automatically re-initialized and the system bus started again.

Note: If the BUS-OFF state occurs, the frequency inverter breaks down with

"F2210 BUS-OFF".

After Bus-OFF, the system bus in the frequency inverter is completely reinitialized.

There is a new boot-up message from the node and an emergency telegram with the

Bus-OFF messa

e is transmitted. The chan

e of state of the node to Operational is

done by the Start-Remote-Node telegram cyclically sent by the system bus master.

Actual values of the system bus

No. Description Function

978 Node-State 1 - Pre-Operational

2 - Operational

3 - Stopped

979 CAN-State 1 - OKAY

2 - WARNING

3 - BUS-OFF

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BONFIGLIOLI act 401 Betriebsanleitung Seite 43