Siemens SIMATIC S7-1500 System Manual page 113

System overview
5.3 S7-1500 R/H-CPUs
Displaying faults in an IO device
The various components of the S7-1500R/H redundant system are connected over
PROFINET/Industrial Ethernet (IE). The devices detect faults in their modules (for example IO
device ET 200SP) and send diagnostics data to the assigned CPU. The CPU analyzes this
diagnostic information and notifies the connected display media. The information analyzed is
shown in graphic form in the configuration and programming software (TIA Portal), on the
HMI devices and on the CPU displays.
Figure 5-24
Advantages and customer benefits
Integrated system diagnostics offers the following advantages:
• Diagnostics is always consistent with the actual state of the plant. In S7-1500R/H
redundant mode, the diagnostic information is synchronized between the CPUs.
• The uniform display concept enables efficient error analysis.
• The immediate identification of the error source in the event of an error speeds up
commissioning and minimizes production downtimes.
• By configuring diagnostics events, you tailor the diagnostics to the requirements of your
automation task.
112
Overview of system diagnostics in a plant
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF