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6. Profibus operation

6.1. Master Class 1 (Parameterization master)

After encoder connection and start of master class 1 (parameterization master) PROFIBUS boots up

automatically. Based on the inactive status „Wait Prm" (wait for parameterization) the encoder will go through

the operating statuses "Parameterization" and "Configuration" until the final status "Data Exchange" where it

usually remains.

6.2. Status indicator (multi-colour LED)

The back of the bus cover provides an integrated multi-colour LED indicating the encoder operating status.

When the encoder is under power supply, always one the following operation statuses is indicated by the

LED:

Colour

LED yellow continuous

LED green continuous

LED red continuous 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 PROFIBUS master (PLC) has begun data

communication with the slave (encoder). Usually this status is just an instant and nearly unnoticed since

normally the encoder is immediately tracked by master. However, yellow continuous may remain in case of

unsuccessful data communication, for example in case of an incorrect address or failure in the PROFIBUS

cable.

After successful encoder configuration and parameterization (automated process) the encoder goes to „Data

Exchange" starting cyclic data communication. A green LED now signalizes cyclic transmission of position

data to the master.

Upon occurrence of a position leap („code consistency error") or speed exceeding approx. 6200 rpm the LED

is red continuous for at least 2.5 s. If the indicated error remains or occurs repeatedly within this time, the red

continuous period is correspondingly extended.

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

This status remains until the encoder receives an admissible preset value.

In case of inadmissible parameterization by master the LED is flashing red slowly (1 Hz) what may occur with

incorrect parameter input in the projecting phase. Most of incorrect inputs are compensated by the GSD file,

but it is impossible to eliminate every error.

Manual_ProfibusDPV2_BIDE_EN.docx

22.11.12

Status

Encoder not active in the bus, not (yet) parameterized.

Encoder in „Data_Exchange" mode.

Active data exchange.

Inadmissible position leap or the maximum electric speed is

exceeded

Parameterization error

Transmitted preset value beyond the admissible value range

17/41

Baumer IVO GmbH & Co. KG

Villingen-Schwenningen, Germany