Siemens Simatic S7-300 Technical Data Manual page 126

Technical data of CPU 31xC
6.4 CPU 313C-2 PtP and CPU 313C-2 DP
Technical data
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
–
Forcing
Variables
•
Number of variables
•
Block status
Single step
Breakpoints
Diagnostic buffer
Number of entries (not configurable)
•
6-16
CPU 313C-2 PtP
Max. 8
Max. 8
Max. 6
CPU 313C-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 313C-2 PtP
Max. 8
(depends on the number of connections configured for PG / OP and S7 basic
communication)
Yes
Max. 20
CPU 313C-2 PtP
Yes
Inputs, outputs, memory bits, DBs, timers, counters
Max. 30
Max. 30
Max. 14
Yes
Inputs, outputs
Max. 10
Yes
Yes
2
Yes
Max. 100
CPU 313C-2 DP
CPU 313C-2 DP
CPU 313C-2 DP
CPU 313C-2 DP
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05