Siemens Simatic S7-400 - Page 161

Technical specifications
10.1 Technical Specification of the CPU 414-3 PN/DP; (6ES7414-3EM05-0AB0)
S7-400 Automation System, CPU Specifications
Manual, 10/2006, 6ES7498-8AA04-8BA0
10-5
CPU and firmware version
Time synchronization Yes
• In PLC, on MPI, DP and IF
964 DP
As master or slave
• On Ethernet via NTP
Yes (as client)
S7 message functions
Number of stations that can be used
For block-specific messages (Alarm_S/SQ or
Alarm_D/DQ)
31
For control-specific messages (ALARM_8 blocks,
archive)
8
Symbol-related messages Yes
• Number of messages
– Total
– 100 ms scheme
– 500 ms scheme
– 1000 ms scheme
Max. 512
Max. 128
Max. 256
Max. 512
• Number of additional values
per message
– With 100 ms scheme
– With 500 to 1000 ms scheme
Max. 1
Max. 10
Block-related messages Yes
• Simultaneously active
ALARM_S/SQ blocks and
ALARM_D/DQ blocks
Max. 100
ALARM_8 blocks Yes
• Number of communication
jobs for ALARM_8 blocks and
blocks for S7 communication
(can be set)
Max. 600
• Preset
300
Process control reports Yes
Number of archives that can log on
simultaneously (SFB 37 AR_SEND)
16
Test and startup functions
Status/control variable Yes
• Variable
Inputs/outputs, memory markers, DB, distributed
inputs/outputs, timers, counters
• Number of variables
Max. 70
Forcing Yes
• Variable
Inputs/outputs, memory markers, distributed
inputs/outputs
• Number of variables
Max. 256
Block status Yes
Single-step mode Yes
Diagnostic buffer Yes
• Number of entries
Max. 3200 (can be set)