Siemens SIMATIC S7-1500 Manual page 31

ODK toolchain
NOTE
ODK toolchain
We recommend compiling the user applications with the refurbished ODK toolchain.
Please also read the entries 109782620
(https://support.industry.siemens.com/cs/ww/en/view/109782620)and 109782540
(https://support.industry.siemens.com/cs/ww/en/view/109782540) on the Internet with
regard to the ODK toolchain.
Autostart of user programs
You can start applications automatically using systemd services. There are examples of this in
the official systemd manual
(https://www.freedesktop.org/software/systemd/man/systemd.service.html#Examples).
Special features
NOTE
Initial startup with an 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.
CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Equipment Manual, 11/2022, A5E40882737-AC
Product overview
3.4 Firmware functions
31