Technical data of CPU 31xC
6.3 CPU 313C
CPU 31xC and CPU 31x, Technical Data
6-10 Manual, 01/2006 Edition, A5E00105475-06
Technical data
Digital channels Max. 1016
• Centralized
Max. 992
• Integrated channels
24 DI / 16 DO
Analog channels Max. 253
• Centralized
Max. 248
• Integrated channels
4 + 1 AI / 2 AO
Removal
Module rack Max. 4
Modules per rack Max. 8; Max. 7 in rack 3
Number of DP masters
• Integrated
None
• Via CP
4
Operable function modules and communication
processors
• FM
Max. 8
• CP (PtP)
Max. 8
• CP (LAN)
Max. 6
Time
Clock Yes (hardware clock)
• Buffered
Yes
• Buffered period
Typically 6 weeks (at an ambient temperature of
40 °C)
• Behavior of the clock on expiration of the
buffered period
The clock keeps running, continuing at the time-
of-day it had when power was switched off.
• Accuracy
Deviation per day < 10 s
Operating hours counter 1
• Number
0
• Value range
2
31
hours
(if SFC 101 is used)
• Granularity
1 hour
• Retentive
Yes; must be manually restarted after every
restart
Time synchronization Yes
• In the PLC
Master
• On MPI
Master/slave
S7 message functions
Number of stations that can be logged on for
signaling functions
Max. 8
(depends on the number of connections
configured for PG / OP and S7 basic
communication)
Process diagnostics messages Yes
• Simultaneously enabled interrupt S blocks
Max. 20
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