Test and service functions
15.1 Test functions
S7-1500R/H redundant system
474 System Manual, 01/2024, A5E41814787-AF
Testing with watch tables
The following functions are available in the watch table:
• Monitoring of tags
Using watch tables, you can monitor the actual values of the individual tags of a CPU user
program.
– On the PG/PC
– On the display of the CPU
Please note the following requirement for displaying the tag values on the CPU display:
You must specify a symbolic name for each tag in the "Name" column of the force table.
You monitor the following operand areas:
– Inputs and outputs (process image) and bit memory
– Contents of data blocks
– Peripheral inputs and peripheral outputs
– Timers and counters
• Modifying tags
You use this function to assign values to the individual tags of a user program or a CPU on
the PG/PC. Modifying is also possible with Test with program status.
The following operand areas are modifiable:
– Inputs and outputs (process image) and bit memory
– Contents of data blocks
– Peripheral inputs and peripheral outputs (for example, %I0.0:P, %Q0.0:P)
– Timers and counters
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