Siemens SIMATIC S7-400H - Page 398

Technical data
20.2 Technical specifications of the CPU 414–5H PN/DP; (6ES7 414-5HM06–0AB0)
S7-400H
398 System Manual, 03/2012, A5E00267695-11
Time
Clock Yes
 Buffered
Yes
 Resolution
1 ms
Maximum deviation per day
 Power off (backed up)
1.7 s
 Power on (not backed up)
8.6 s
Operating hours counter 16
 Number/number range
0 to 15
 Range of values
0 to 32767 hours
0 to 2
31
-1 hours when SFC 101 is used
 Granularity
1 hour
 Retentive
Yes
Time synchronization Yes
 In AS, on MPI and DP
As master or slave
Time difference in the system with
synchronization via MPI
Max. 200 ms
Time difference in the system with
synchronization via Ethernet
Max. 10 ms
S7 alarm functions
Number of stations that can be logged on
For block-related alarms with SFC (Alarm_S/SQ
and/or Alarm_D/DQ)
63
For block-related alarms with SFB (Notify,
Notify_8, Alarm, Alarm_8, Alarm 8P)
8
Block-related alarms with SFC Yes
 Simultaneously active Alarm_S/SQ blocks or
Alarm_D/DQ blocks
Maximum 400
Block-related alarms with SFB Yes
 Number of communication jobs for block-
related alarms with SFC and blocks for S7
communication (programmable)
Maximum 2500
 Default
900
Process control alarms Yes
Number of archives that can be logged on
simultaneously (SFB 37 AR_SEND)
16