Behavior Of The Fm458-1 Dp From The Perspective Of The S7-400 Cpu When The Operating State Changes - Siemens SIMATIC FM 458-1 DP User Manual

STOP Yellow
Flashing
Table 2-6 Significance of the LED status displays
NOTE
2.1.7 Behavior of the FM458-1 DP from the perspective
of the S7-400 CPU when the operating state changes
Behavior when
transferring data
sets at operating
state transitions
Behavior for K-bus
transfer at
operating state
transitions
Application Module FM 458-1 DP - User Manual
A5E01078222-02 Edition 03.2009
Bright STOP status
The user program is not running, the module is at stop, e.g. or fatal
system, initialization errors or the
S7-CPU is at stop
Download running in the STOP condition.
Errors can be acknowledged by pressing the acknowledge button. If an
additional error exists, it is displayed after the first error has been
acknowledged.
More information on the diagnostic possibilities, refer to the User
Documentation Manual " STEP 7 option packages for D7-SYS ",
Chapter "Basis software", Section "Diagnostics".
 Transition of the FM458-1 DP from STOP->RUN:
The data sets, configured in the CFC (using @CPB, CRV, CTV) are,
before the transition to RUN, set-up on the FM side. The configured
data sets are only enabled for the S7-CPU after the communications
processing on the FM side has completely established its
administration. In RUN, this takes several tasks cycles on the FM
side. On the S7-CPU, this is detected in the user program in so much
that the SFC58 (WR_REC) still supply value 0x80B0 and the SFC59
(RD_REC) still supply value 0x80C0 as return value. Values are only
transferred between the FM458-1 DP and S7-CPU if these SFCs
return a value of 0.
 Transition of the FM458-1 DP from RUN->STOP:
When the STOP state is reached, FM458-1 DP designates all of the
configured data sets, as non-available. Just like the case above, this
is then detected in the user program, on the CPU side, using the
return values 0x80B0 and 0x80C0.
 Behavior for POWER ON:
The configured data sets are set-up but are only released, just like at
the transition from STOP->RUN, after several task cycles in RUN.
 Transition of the FM458-1 DP from STOP->RUN:
The BSEND (SFB12) on the S7-CPU side outputs an error message
until the FM458-1 DP has completely established the communications
administration in RUN. In the RUN state, this procedure lasts several
cycles. This is signaled on the S7-CPU side in the user program using
the ERROR and STATUS return values. ERROR has a value of 1 and
STATUS a value of 7. This means that the partner block (in this case,
the BRCV on the FM side) is in the incorrect state. ERROR goes to 0
as soon as BRCV is ready to receive data on the FM side.
Product description
2-13