Siemens SIMATIC IM151-1 STANDARD User Manual

Interrupt, error, and system messages
4.4 Diagnostics with STEP 7
Interface module IM151-1 STANDARD (6ES7151-1AA06-0AB0)
Manual, 07/2015, A5E01075950-AD
39
4.4
Diagnostics with STEP 7
4.4.1
65B
Diagnostics readout
Introduction
The slave diagnostics comply with IEC 61784-1:2002 Ed1 CP 3/1. Depending on the DP
master, slave diagnostics can be read out with
STEP 7 for all DP slaves that comply with the
standard.
Length of the diagnostics frame
● The maximum frame length for the ET 200S is as follows:
– IM151-1 STANDARD (DPV0 mode): 62 bytes
– IM151-1 STANDARD (DPV1 mode): 110 bytes
● The minimum frame length is
– 6 bytes (identifier-related diagnostics, module status, and channel-specific diagnostics
disabled via parameter assignment).
Options for reading out the diagnostics
The table below shows the options for reading out the diagnostics with STEP 7 on
PROFIBUS DP.
Table 4- 2 Reading out the diagnostics with STEP 7 on PROFIBUS DP
Automation system with DP
master
Block or tab in STEP 7
Application
Reference
SIMATIC S7/M7 "DP Slave Diagnostics"
tab
Slave diagnostics in plain text on
the STEP 7 user interface
"Diagnosing hardware" in
STEP 7 Online Help
SFC 13 "DP NRM_DG" Reading out slave diagnostics
(store in the data area of the user
program)
SFC see STEP 7 Online Help
SFC 59 "RD_REC" Reading out data records of the
S7 diagnostics (store in the data
area of the user program)
See the system and standard
functions reference manual
SFB52
"RDREC"
Read data records from the DP
slave
SFB see STEP 7 Online Help
(system functions/function
blocks)
SFB 54 "RALRM"
1
Receiving interrupts from the
interrupt OBs
SFB see STEP 7 Online Help
(system functions/function
blocks)
1
only for S7-400 from V3.0 and CPU 318 from V3.0

Siemens SIMATIC IM151-1 STANDARD Specifications

General

Brand	Siemens
Model	SIMATIC IM151-1 STANDARD
Category	Control Unit
Language	English