Reading Diagnostic Data With Step 7 - Siemens SIMATIC S7-300 Series Reference Manual

Reading Diagnostic Data with STEP 7

Table 2-2 Reading Diagnostic Data with STEP 7
DP Master Modules or
registers in
STEP 7
CPU 31x-2 "DP slave
diagnostics"
tab
SFC 13
"DPNRM_DG"
SFC 59
"RD_REC"
SFC 51
"RDSYSST"
SFB 52
"RDREC"
(only 318-2)
SFB 54
"RALRM"
(only 318-2)
Evaluating Diagnostics in the User Program
The following figures show you how to evaluate the diagnosis in the user program.
Note the order number for the CPU 315-2DP:
CPU 315-2DP < 6ES7 315-2AF03-0AB0
...see Figure 2-1 on page 2-8
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
CPU 31x-2 as DP Master/DP Slave and Direct Communication
Application
Display slave diagnostic data
as plain text on the STEP 7
user interface
Reading out slave diagnosis
(store in the data area of the
user program)
Read out data records of the S7
diagnosis (store in the data
area of the user program)
Read out system state sub-lists.
In the diagnostics interrupt with
the SSL ID W#16#00B4, call
SFC51 and read out the SSL
(system diagnostic list) of the
slave CPU.
Applicable to DPV1
environment:
Read out data records of the S7
diagnosis (store in the data
area of the user program)
Applicable to DPV1
environment:
Read out interrupt information
within the corresponding
interrupt OB
CPU 315-2DP as of 6ES7315-2AF03-0AB0
CPU 316-2DP as of 6ES7316-2AG00-0AB0
CPU 316-2 as of 6ES7318-2AJ00-0AB0
...see Figure 2-2 on page 2-9
See...
See "Diagnosis of Hardware" in
the STEP 7 Online Help and
STEP 7 User Manual
Configuration for the CPU 31x-2,
see Section 2.6.4; SFC, see
System and Standard Functions
Reference Manual
Configuration for other slaves,
see their description
System and Standard Functions
Reference Manual
2-7