Siemens SIPART PS2 PA 6DR55 Series, Руководство по эксплуатации

Страница: 201 / 292

Functions/operations using PROFIBUS PA
11.3 Cyclic data transfer
SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
201
11.3.3.2 Diagnostics
Function
The positioner can report active information about its device status. These diagnoses are
important information that can be used by an automation system to initiate remedial
measures.
Standard mechanisms of PROFIBUS-DP are used to transfer the diagnostics information
and report it actively to the class 1 master. PROFIBUS-DP has a protocol to transfer the
information that has higher priority than the useful data to the class 1 master.
The contents of the "Device status" parameter from the physical block are reported along
with the information whether a status change (event received/event sent) has occurred.
Diagnostics as per PROFIBUS DP (DDLM_Slave_Diag)
The positioner delivers the diagnostics data in the following format:
Input (master view)
0 Station_status_1
1 Station_status_2
2 Station_status_3 Standard DP - diagnostics
3 Diag_Master_Add
4 Ident_Number
5 Ident_Number
6 Header
7 Status_Type Status coding as per DP/V1
8 Slot_Number
9 Specifier
10 Diagnostics (0)
11 Diagnostics (1)
12 Diagnostics (2)
Starting address
13 Diagnostics (3)
Diagnostics object of the physical block
Specifier
The following specifiers are available:
1: Incoming event
2: Outgoing event