Siemens CPU 31 Series Technical Data Manual page 122

Technical data of CPU 31xC
6.3 CPU 313C
Technical data
Digital channels
•
•
Analog channels
•
•
Removal
Module rack
Modules per rack
Number of DP masters
•
•
Operable function modules and communication
processors
•
•
•
Time
Clock
•
•
•
•
Operating hours counter
•
•
•
•
Time synchronization
•
•
S7 message functions
Number of stations that can be logged on for
signaling functions
Process diagnostics messages
•
6-10
Centralized
Integrated channels
Centralized
Integrated channels
Integrated
Via CP
FM
CP (PtP)
CP (LAN)
Buffered
Buffered period
Behavior of the clock on expiration of the
buffered period
Accuracy
Number
Value range
Granularity
Retentive
In the PLC
On MPI
Simultaneously enabled interrupt S blocks
Max. 1016
Max. 992
24 DI / 16 DO
Max. 253
Max. 248
4 + 1 AI / 2 AO
Max. 4
Max. 8; Max. 7 in rack 3
None
4
Max. 8
Max. 8
Max. 6
Yes (hardware 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
Max. 8
(depends on the number of connections
configured for PG / OP and S7 basic
communication)
Yes
Max. 20
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06