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5.8. Implementation of system functions for alarm handling

Make sure that the system components required for alarm handling have been implemented in the project. To

Siemens Step7 projects apply in particular OB82 ("I/O Point Fault") and OB86 ("Loss Of Rack Fault").

Missing these components will result in a control STOP in case of alarm.

5.9. Compilation and load of hardware and software configuration

After completed hardware project configuration and once having entered all parameters the project must be

compiled ("translated") and exported to the control.

6. PROFINET operation

6.1. Controller

After having connected the encoder and started the controller (PLC) there is an automated PROFINET boot

up implicating a comprehensive initialising procedure. The device is assigned an IP and the communication

and application structure is built up.

6.2. Operating status indicator (multi-color LED)

The bus cover provides an integrated multi-color LED indicating the encoder's operating status. The LED will

always signal one of the following operating statuses as long as the encoder is live:

Color

LED yellow continuous

LED green continuous

LED red continuous for 2,5 s

LED red flashing slowly (1 Hz)

LED red flashing fast (5 Hz)

At encoder power-on the LED remains yellow continuous until the PROFINET controller (PLC) has

established a communication link to the slave (encoder). Usually this status is just an instant and nearly

unnoticed provided the master is already running. Yellow continuous however will may remain in case

communication cannot be established, maybe due to a malfunction in the PROFINET cable.

Provided encoder configuration and parameterization was successful (automated process) the cyclic data

communication will commence. The LED green continuous signals cyclic transmission of position data to the

controller.

Upon occurrence of a position leap („code consistency error") or excess speed of more than 6200 rpm the

LED will change to red continuous for at least 2.5 s. If the signalized error remains or occurs repeatedly

within this time, red continuous will be extended correspondingly.

If the encoder receives a preset value outside the limits the LED will change to red flashing fast (5 Hz). This

alarm remains until the encoder is receiving an admissible preset value.

In case of incorrect parameterization by the master the LED is flashing red slowly (1 Hz). This may be due to

incorrect parameter input in the projecting tool. Most of incorrect inputs are compensated by the GSDML file,

but eliminating every error is not possible.

6.3. Activity indicator (green LEDs)

The bus cover provides two additional green LEDs to signal data communication status on ports P1 and P2.

During non-permanent data communication (e.g. during bootup) the LEDs are flashing. At fast cyclic data

communication they may remain green continous.

Manual_PROFINET_EN.doc

17.10.11

Status

Encoder not active in the bus, no PROFINET link.

PROFINET link provided by one or both ports (link status active)

Inadmissible position leap or maximum speed exceeded.

Parameterization error

Transmitted preset value outside the admissible value range

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