Technical data of CPU 31x
7.2 CPU 312
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06
7-5
Technical data
Analog channels Max. 64
Of those central Max. 64
Removal
Module rack Max. 1
Modules per rack Max. 8
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. 4
Time
Clock Yes (SW clock)
• Buffered
No
• Accuracy
Deviation per day < 15 s
• Behavior of the realtime clock after POWER
ON
The clock keeps running, continuing at the time-
of-day it had when power was switched off.
Operating hours counter 1
• Number
0
• Value range
2
31
(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
6
(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
Test and startup functions
Status/control variables Yes
• Variables
Inputs, outputs, memory bits, DBs, timers,
counters
• Number of variables
– Of those as status variable
– Of those as control variable
30
30
14
To Next Page
