Siemens CPU 31 Series Technical Data Manual page 135

Technical data
Assembly
Racks
Modules per rack
Number of DP masters
Integrated
•
via CP
•
Number of function modules and
communication processors you can
operate
FM
•
CP (PtP)
•
CP (LAN)
•
Time-of-day
Real-time clock
Buffered
•
Buffered period
•
Behavior of the clock on expiration
•
of the buffered period
Accuracy
•
Operating hours counter
Number
•
Value range
•
Granularity
•
Retentive
•
Clock synchronization
In the PLC
•
On MPI
•
S7 signaling functions
Number of stations that can log in for
signaling functions (e.g. OS)
Process diagnostics messages
Simultaneously enabled interrupt S
•
blocks
Testing and commissioning functions
Status/control variables
Variables
•
Number of variables
•
of those as status variable
–
of those as control variable
–
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06
CPU 314C-2 PtP
CPU 314C-2 PtP
Max. 4
Max. 8; Max. 7 in rack 3
No
4
Max. 8
Max. 8
Max. 10
CPU 314C-2 PtP
Yes (HW clock)
Yes
Typically 6 weeks (at an ambient temperature of 40 °C)
The clock keeps running, continuing at the time-of-day it had when power was
switched off.
Deviation per day < 10 s
1
0
2 hours
31
(if SFC 101 is used)
1 hour
Yes; must be manually restarted after every restart
Yes
Master
Master/slave
CPU 314C-2 PtP
Max. 12
(depends on the number of connections configured for PG / OP and S7 basic
communication)
Yes
Max. 40
CPU 314C-2 PtP
Yes
Inputs, outputs, memory bits, DBs, timers, counters
Max. 30
Max. 30
Max. 14
Technical data of CPU 31xC
6.5 CPU 314C-2 PtP and CPU 314C-2 DP
CPU 314C-2 DP
CPU 314C-2 DP
1
4
CPU 314C-2 DP
CPU 314C-2 DP
CPU 314C-2 DP
6-23