Monitoring And Modifying Values In The Cpu - Siemens S7-1200 System Manual
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14.11
Monitoring and modifying values in the CPU
STEP 7 provides online tools for monitoring the CPU:
● You can display or monitor the current values of the tags. The monitoring function does
● You can also use other functions to control the sequence and the data of the user
Table 14- 3
Editor
Watch table
Force table
Program editor
Tag table
DB editor
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
not change the program sequence. It presents you with information about the program
sequence and the data of the program in the CPU.
program:
– You can modify the value for the tags in the online CPU to see how the user program
responds.
– You can force a peripheral output (such as Q0.1:P or "Start":P) to a specific value.
– You can enable outputs in STOP mode.
Note
Always exercise caution when using control functions. These functions can seriously
influence the execution of the user/system program.
Online capabilities of the STEP 7 editors
14.11 Monitoring and modifying values in the CPU
Monitor
Yes
Yes
Yes
Yes
Yes
Online and diagnostic tools
Modify
Yes
No
Yes
No
No
Force
No
Yes
No
No
No
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