Baumer G0LMH Handbuch - Seite 14
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8. Diagnostic signals
Diagnostic signals contain data relating to the respective status of the encoder. The diagnostic signals
comprise Profibus-relevant information and device-specific information. The master controls communication
with the slave using this information, or forwards it to the higher-level system.
The master requests diagnosis data both prior to parameterization and after configuration of the slave.
This ensures that the slave is present in the bus and that the data stored in the control system software is in
agreement with the data stored in the slave. The slave can also register a diagnosis event in the
Data_Exchange mode. The master then requests the diagnosis data. The user-specific information is defined
in the EN 50170 standard under Encoder profile 1.1.
The display element integrated in the bus cover (dual red/green LED) indicates part of this information.
8.1. Description of the diagnosis data Slave_Diag
Device
Diagnosis data
class
1
Station status 1
1
Station status 2
1
Station status 3
1
Diag_Master
1
Ident_number
Extended diagnosis
1
header
1
Alarm signals
1
Operating status
1
Encoder type
1
Steps per revolution
1
Number of revolutions
Additional alarm
2
signals
2
Supported alarm signals
Continued on next page.
Baumer_ProfibusDPV0_BIDE_MA_EN.docx
11.19
Octet no. Significance
Status of
Parameterization
1
Configuration
Diagnostic data (Diag.ext. bit and Diag.stat. bit in case of
alarm and warning signals)
Status of
2
Response monitoring
Freeze or Sync mode
3
Not supported
4
Address of the master which first parameterized the slave
Device identifier
Unique for each device type
5 to 6
Reserved and stored with the PNO
Length of the encoder diagnosis including diagnosis header
7
byte in the case of extended diagnosis
Display of malfunctions which could lead to incorrect position
values.
Triggered by
8
Code consistency error or inadmissible preset value
Preset value is outside the admissible value range.
Indication of supported user-specific data
Counting direction
Functional scope of the encoder, defined in device class 1
9
and 2
Extended diagnosis
Scaling function
10
Indication of encoder type
11 to 14
Maximum resolution per revolution of the encoder
15, 16
Maximum number of revolutions of the encoder
17
Not supported
Indication of which alarm is supported
18
Incorrect position value
14/26
Baumer IVO GmbH & Co. KG
Villingen-Schwenningen, Germany