Siemens S7-1500 Function Manual page 68

Number of measurements
The CPU supports a maximum of 999 measurements. The CPU writes the trace recordings
to the load memory of the memory card. Meanwhile, the CPU pauses the checking of trigger
conditions for the trace job. Once the CPU finishes saving the trace recordings, the CPU
continues checking the trigger conditions.
NOTICE
Memory required on the SIMATIC memory card
When the trace function "Measurements on device (memory card)" requires more memory
than is available on the SIMATIC memory card, undesired effects may result. Ensure there
is always sufficient free memory space to use the "Measurements on device (memory
card)" function.
In addition to the "Measurements on device (memory card)" trace function, other functions
such as storing data logs use memory space on the SIMATIC memory card. Ensure there
is always sufficient memory space available for all functions that use memory.
You can find additional information about trace measurements and trace recordings in the
following:
● Function manual Using the Trace and Logic Analyzer Function
(http://support.automation.siemens.com/WW/view/en/64897128)
● Function manual Web Server
(http://support.automation.siemens.com/WW/view/en/59193560)
● STEP 7 online help
Firmware update using SIMATIC memory card
You can find information on how to perform a firmware update in the following:
● System manual S7-1500, ET 200MP Automation System
(http://support.automation.siemens.com/WW/view/en/59191792)
● System manual Redundant System S7-1500R/H
(https://support.industry.siemens.com/cs/ww/en/view/109754833)
● System manual ET 200SP Distributed I/O System
(http://support.automation.siemens.com/WW/view/en/58649293)
● Operating instructions ET 200pro CPU 1516pro-2 PN
(http://support.automation.siemens.com/WW/view/en/58649293)
Reference
You can find additional information about the SIMATIC memory card in the STEP 7 online
help.
Structure and Use of the CPU Memory
Function Manual, 10/2018, A5E03461664-AC
4.3 Data transfer with SIMATIC memory cards
SIMATIC memory card
67