Siemens SIMATIC S7-1500 System Manual page 34

What's new in the S7-1500R/H redundant system System Manual, edition 11/2019 compared to
edition 10/2018
What's new?
New con- Switched S1 device
tents
DIN rail adapter
Testing with breakpoints
PID controller
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
What are the customer benefits?
The "Switched S1 device" function of the CPU
enables operation of standard IO devices in
the S7-1500R/H redundant system.
You can mount the R/H CPUs on a standard-
ized 35 mm rail using the DIN rail adapter.
When testing with breakpoints, you run a
program 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
programs prior to actual commissioning
• Recording of current values within indi-
vidual executed loops
• Using breakpoints for program validation
is also possible in SCL or STL networks
within LAD/FBD blocks.
PID controllers are built into all R/H-CPUs as
standard. PID controllers measure the actual
value of a physical variable, for example,
temperature or pressure, and compare the
actual value with the setpoint. Based on the
resulting error signal, the controller calculates
a manipulated variable that causes the pro-
cess value to reach the setpoint as quickly and
stably as possible.
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 pa-
rameters and tuning during operation.
• No additional hardware and software
required.
New properties/functions
Where can I find the infor-
mation?
Redundancy (Page 97) section
Installing the DIN rail adapter
(Page 244) sec.
Section Test functions
(Page 471)
Sec. PID control (Page 115)
33