S7-400 Automation System, CPU Specifications
Manual, 10/2006, 6ES7498-8AA04-8BA0
10-1
Technical specifications
10
10.1 Technical Specification of the CPU 414-3 PN/DP;
(6ES7414-3EM05-0AB0)
Data
CPU and firmware version
Order no. [MLFB] 6ES7414-3EM05-0AB0
• Firmware version
V 5.0
Associated programming package STEP 7 V 5.4 SP1 and higher
Memory
Working memory
• Integrated
1.4 MB for code
1.4 MB for data
Loading memory
• Integrated
512 KB RAM
• Expandable FEPROM
With memory card (FLASH) up to 64 MB
• Expandable RAM
With memory card (RAM) up to 64 MB
Backup with battery Yes, all data
Typical processing times
Processing times of
• Bit operations
45 ns
• Word instructions
45 ns
• Fixed-point arithmetic
45 ns
• Floating-point arithmetic
135 ns
Timers/counters and their retentive address areas
S7 counters 2048
• Retentive address areas,
configurable
From C 0 to C 2047
• Preset
From C 0 to C 7
• Counting range
0 to 999
IEC counters Yes
• Type
SFB
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