Siemens CP 342–5 Manual page 17

Information in the Online Help and Documentation regarding NCM S7 for
PROFIBUS
The additional information "for newer modules" in the STEP 7 / NCM online help
and in the NCM S7 for PROFIBUS manual applies to the CP described here. The
symbol shown here is used to indicated the relevant passages.
Note on Installation
If you cannot close the slot gap resulting from replacing an older module by shifting
the other modules, you must insert a dummy module (6ES7 370-0AA01-0AA0).
Compatibility
The CP 342-5/342-5 FO behaves differently from its predecessors in several ways.
Remember that this affects your user program. The following table provides an
overview:
Table 1-12 Changed Behavior
Topic
1. DPSTATUS output parameter in
FC DP_RECV
DP master mode:
DP slave mode:
2. DP modes
3. Setting the current DP mode
4. Cyclic reading of the
input/output data using FC
1)
DP_CTRL
Manual CP 342–5 / CP 342–5 FO
C79000–G8976–C146/01
Previously
Bit 6: indicated "overflow of
received data"
Bit 3: indicated "no frame from
DP master within watchdog
time"
Bit 4: indicated "overflow of DP
data"
A distinction was made
between STOP and OFFLINE.
– is supported –
– supported
New
Bit 6: is no longer set
Bit 3: is no longer set
Bit 4: is no longer set
The STOP mode is represented
by the OFFLINE mode.
In the version of the CP 342-5
described here, the following
job parameters are not suppor-
ted for FC DP_CTRL with
CTYPE 4:
S
RUN with AUTOCLEAR
S
RUN without AUTOCLEAR
In the version of the CP 342-5
described here, the following
services of FC DP_CTRL are
not supported:
CTYPE = 7
CTYPE = 8
These job types are rejected
with the code 8311 .
H
17