6 diagnostic messages, 1 overview, Diagnostic messages – BEI Sensors MHK5 Absolute Hollow Shaft Encoder User Manual
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6 Diagnostic messages
6.1 Overview
On request of the master the encoder transmits
diagnostic data ("DDLM_Slave_Diag"). The
diagnostic data length is 57 bytes (Exception:
shorter diagnostics, cp. 5.1.5). The format of the
diagnostic data is according to the Profibus
Standard (octets 1-6) respectively according to the
Profile for Encoders (starting from octet 7).
Diagnostic function
Data type
Diagnostics - octet number
Class
Station status 1 (ref. to: Profibus Standard) Octet
1
1
Station status 2 (ref. to: Profibus Standard) Octet
2
1
Station status 3 (ref. to: Profibus Standard) Octet
3
1
Diagnostic master address
Octet
4
1
PNO identification number
Octet
5, 6
1
Extended diagnostic header
Octet String
7
1
Alarm messages
Octet String
8
1
Operating status
Octet String
9
1
Encoder type
Octet String
10
1
Resolution per revolution (Hardware)
Unsigned 32 11 - 14
1
Number of revolutions (Hardware)
Unsigned 16 15, 16
1
Additional alarm messages
Octet String
17
2
Supported alarm messages
Octet String
18, 19
2
Warnings
Octet String
20, 21
2
Supported warnings
Octet String
22, 23
2
Profile version
Octet String
24, 25
2
Software version
Octet String
26, 27
2
Operating time
Unsigned 32 28 - 31
2
Zero offset
Unsigned 32 32 - 35
2
Manufacturer-specific: offset value
Unsigned 32 36 - 39
2
Programmed resolution per revolution
Unsigned 32 40 - 43
2
Programmed total resolution
Unsigned 32 44 - 47
2
Serial number
ASCII String 48 - 57
2
Revision 03/10
BEI Sensors Profibus Manual serie M
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