What's new? What are the customer benefits? Where can I find the informa
tion?
Testing with breakpoints When testing with breakpoints, you run a pro
gram from breakpoint to breakpoint in the
STARTUP (startup OB) or RUN-Solo system
state. Testing with breakpoints provides you
with the following advantages:
• Testing SCL and STL program code with the
help of breakpoints
• Localization of logic errors step by step
• Simple and quick analysis of complex pro
grams prior to actual commissioning
• Recording of current values within individu
al executed loops
• Using breakpoints for program validation is
also possible in SCL or STL networks within
LAD/FBD blocks.
Section Test functions (Page
344)
New con
tents
PID controller PID controllers are built into all R/H‑CPUs as
standard. PID controllers measure the actual
value of a physical variable, for example, tem
perature or pressure, and compare the actual
value with the setpoint. Based on the resulting
error signal, the controller calculates a manipu
lated variable that causes the process value to
reach the setpoint as quickly and stably as pos
sible.
The PID controllers offer you the following
advantages:
• Simple configuration and programming
through integrated editors and blocks.
• Simple simulation, visualization, commis
sioning and operation via PG and HMI.
• Automatic calculation of the control para
meters and tuning during operation.
• No additional hardware and software
required.
Sec. PID control (Page 62)
Download modified user pro
gram in RUN-Redundant sys
tem state
You can download a modified user program
into the R/H CPUs in the RUN-Redundant sys
tem state.
Advantage: The redundant system will remain
in the RUN-Redundant system state during
changes to the user program. The system state
is not changed after RUN-Solo or SYNCUP.
Sec. Downloading projects to
the CPUs (Page 256)
Backing up the configuration
of the S7-1500R/H redundant
system in runtime
You do not have to interrupt the process during
a backup while the plant is running.
Uninterrupted plant operation avoids high
restart and material costs.
Section Backing up and restoring
the CPU configuration (Page
298)
Changed
contents
Alarms in the user program Messages enable you to display events from
process execution in the S7-1500R/H redund
ant system and to quickly identify, accurately
locate, and correct errors.
Function manual Diagnostics
(https://support.industry.
siemens.
com/cs/ww/en/view/59192926)
20
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
New properties/functions
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