Baumer GCAMW Manual - Page 17

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Baumer GCAMW Manual

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
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Baumer IVO GmbH & Co. KG
Villingen-Schwenningen, Germany