Interrupt, error and system messages
9.1 PROFIBUS DP
ET 200M
184 Operating Instructions, 04/2022, EWA-4NEB7806006-09
Meaning Remedy
SF BF /
ACT ON
The IM 153-2 in the current operating
mode is not compatible with the redun-
dant IM 153-2.
You will find information on compatibility
between the versions of IM 153-2 in the
chapter "Arrangement of the modules for
the function "Change During Operation"
and / or "Redundancy" (Page 45)" as well
as in appendix "Compatibilities between
the IM 153-x (Page 241)".
* not relevant
** After the transition to the redundant mode the SF LED flashes for a further 20 s.
9.1.2 Diagnosis with STEP 7 or STEP 5
Slave diagnosis
The slave diagnosis behaves in accordance with the IEC 61784-1:2002 Ed1 CP 3/1 standard. It
can be read using STEP 7 or STEP 5 for all DP slaves (dependent on the DP master) which
behave in accordance with the standard.
Possibilities for reading the diagnosis
Table 9- 3 Reading the diagnosis with STEP 7 and STEP 5
Automation system with
Block or tab in STEP 7 Application See ...
Show slave diagnosis in clear
text on the STEP 7 interface
"Diagnose hardware" in the online
help for STEP 7
Read out slave diagnostics
information (stored in the data
area of the user program)
Refer to chapter "Structure of the
diagnostics (Page 187)"
SFC refer to the reference manual
"System and Standard Functions for
S7-300/400
(http://support.automation.siemens.
Read data records of the S7
diagnosis (stored in the data
area of the user program)
Evaluate the slave diagnosis
(http://support.automation.siemens.
Read data record from the DP
slave
Receive interrupts from the
interrupt OBs
SIMATIC S5 with IM 308-C
as DP master
Reading out slave diagnostics
information (storing in the
data area of the user program)
Note: not for enhanced diag-
nostics
Refer to chapter "Structure of the
slave diagnostics (Page 187)"
FB refer to the "ET 200 Distributed
I/O System
(http://support.automation.siemens.
com/WW/view/en/1142470)" manual
SIMATIC S5 with S5 95U as
a DP master