Siemens S7-1500 Function Manual page 61

SIMATIC memory card
4.1 SIMATIC memory card - Overview
Additional folders and files: CPU 1518-4 PN/DP MFP and CPU 1518F-4 PN/DP MFP
The SIMATIC memory card of the CPU 1518-4 PN/DP MFP and CPU 1518F-4 PN/DP MFP
also contain the following folders and files:
● The following C/C++ runtime containers are located in the "/CppEnv1.MFP" directory on
the SIMATIC memory card and are mounted in the file system in Linux:
– System.img → Mount point: "/etc/mfp" (system files)
– User.img → Mount point: "/home" (home directories of users, for
– Data.img → Mount point: "/var/userdata" (e.g. log data)
● RAM-Disk → Mount point: "/var/volatile"
Note
First-time startup of CPU 1518-4 PN/DP MFP and CPU 1518F-4 PN/DP MFP with empty
SIMATIC memory card
When the CPU starts up for the first time with an empty SIMATIC memory card, the card is
prepared for use with C/C++ runtime. This process takes up to three minutes. Do not turn off
the CPU during this phase; the STOP LED flashes.
Note
Impact on performance of the CPU 1518-4 PN/DP MFP and CPU 1518F-4 PN/DP MFP
Depending on the type of programming, C/C++ runtime applications, such as mass storage
accesses to the SIMATIC memory card, can affect the performance of the CPU.
You can find additional information on these CPUs in the CPU 1518-4 PN/DP MFP
(https://support.industry.siemens.com/cs/ww/en/view/109749061) manual and the
CPU 1518(F)-4 PN/DP MFP
(https://support.industry.siemens.com/cs/ww/en/view/109756478) product information.
You can find information on creating C/C++ runtime applications in the
SIMATIC S7-1500 ODK 1500S
(https://support.industry.siemens.com/cs/ww/en/view/109752683) manual.
60
C/C++ runtime application, for example)
Structure and Use of the CPU Memory
Function Manual, 10/2018, A5E03461664-AC