Siemens SIMATIC S5 Manual page 211
Distributed i/o system
Hide thumbs
Also See for SIMATIC S5:
- Manual (396 pages) ,
- Equipment manual (197 pages) ,
- Operating instructions manual (43 pages)
Table of Contents
Advertisement
IM 308-C – starting ET 200
PEU (powerfail in
expansion unit)
Table 11-6 Reaction to interruption of bus communication or failure of a DP slave (with PEU)
Failed DP
slave(s):
Response
monitoring
it i
No
S5-115U:
No OB 35 programmed: CPU
goes to and remains in STOP.
OB 35 programmed (applicable
to 945 CPUs only): CPU
remains in RUN and performs
OB 35 while PEU is pending.
S5-135U, S5-155U: CPU goes to
1
1
STOP
STOP
Yes
S5-115U:
No OB 35 programmed: CPU
goes and remains in STOP.
OB 35 programmed (applicable
to 945 CPUs only): CPU
remains in RUN and performs
OB 35 while PEU is pending.
S5-135U, S5-155U: CPU goes to
STOP
S O
1
Once PEU is cleared, the CPU powers up again via OB 22 (automatic restart).
11-12
The I/O system reacts by issuing the PEU signal (powerfail in expansion
unit),
if a power failure occurs in an expansion unit
if a DP slave fails and PEU was selected as the error-reporting mode in
COM ET 200 Windows.
Failed
DP slave
Reaction of CPU
g
g
1
1
Remaining DP slaves
Reaction of failed DP
slave(s):
The inputs in the CPU
are set to "0". The
t t "0" Th
outputs of the DP slaves
are ...
frozen.
frozen.
frozen.
set to "0" when response
monitoring time expires.
set to "0" when response
monitoring time expires.
set to "0" when response
p
monitoring time expires.
i
i
i
i
ET 200 Distributed I/O System
Reaction of the
remaining DP slaves:
The inputs in the CPU
are updated as before.
d t d
b f
The outputs on the DP
slaves are ...
set to "0".
frozen.
set to "0".
set to "0".
frozen.
set to "0".
EWA 4NEB 780 6000-02a
- Quick Links:
- IM 308-C Master Interface
Hide quick links:
Advertisement
Table of Contents
