Siemens Simatic S7-300 CPU 31xC and CPU 31x S7-300 - Manual (Page 185)

Technical data of CPU 31x
7.5 CPU 315-2 PN/DP
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05
7-19
7.5 CPU 315-2 PN/DP
Technical data
Table 7-6 Technical data for the CPU 315-2 PN/DP
Technical data
CPU and version
Order number
6ES7315-2EG10-0AB0
• Hardware version 01
• Firmware version V 2.3.0
• Associated programming package STEP 7 as of V 5.3 + SP 1
Memory
RAM
• RAM 128 KB
• Expandable No
Capacity of the retentive memory for retentive
data blocks
128 KB
Load memory Plugged in with MMC (max. 8 MB)
Buffering Guaranteed by MMC (maintenance-free)
Data storage life on the MMC
(following final programming)
At least 10 years
Execution times
Processing times of
• Bit operations 0.1 μs
• Word instructions 0.2 μs
• Fixed-point arithmetic 2 μs
• Floating-point arithmetic 6 μs
Timers/counters and their retentivity
S7 counters
256
• Retentive memory Configurable
• Default from C0 to C7
• Counting range 0 to 999
IEC Counters Yes
• Type SFB
• Number Unlimited
(limited only by RAM size)
S7 timers 256
• Retentive memory Configurable
• Default Not retentive
• Timer range 10 ms to 9990 s