Lika XAC80 PB, User Manual, Page: 52 / 60

XAC80 Profibus-DP
®
7.7 DDLM_Slave_Diag
The Master device can send a request to the Slave device for diagnostic
information at any time.
This encoder provides 16-byte diagnostic information.
Diagnostic information consists of two parts: a standard diagnostic information
(bytes 0 … 5) and an extended diagnostic information (bytes 6 … 15). The
standard diagnostic information complies with the guidelines contained in the
“Profibus specification – Normative parts according to the European Standard
EN 50 170 volume 2” publication. While the extended diagnostic information
contains the device related encoder diagnostic information; the DP-Slave
specific diagnostic is entered in this area. The extended diagnostic information
complies with the specifications contained in the “Profibus-DP Profile For
Encoders” publication. The length of the extended diagnostic information for
encoder is specified in byte 6 of the diagnostic message.
16-byte diagnostic information:
Figure 3 - 16-byte Diagnostic information
Byte Description Byte Description
0
Station_Status_1
8
Operating status
1
Station_Status_2
9
Encoder type
2
Station_Status_3
10 MSB
Singleturn resolution
3 Master_Add 11
4 MSB
Ident_Number
12
5 LSB 13 LSB
6 Extended diagnostic header
14 MSB
Number of distinguishable
revolutions 15 LSB
7 Alarms
Station_Status_1
Byte 0. The first 5 bytes are defined in the “Profibus specification” document in
compliance with the European Standard EN 50170 volume 2. For any
information on the meaning of the individual bits in the
Station_Status_1
byte
refer to the “Profibus specification” document.
MAN XAC80 PB E 1.0.odt 7 - Profibus® interface 52 of 60