Editing Cpu Parameters - Siemens SIMATIC S7-400H System Manual

17.7

Editing CPU parameters

17.7.1 Editing CPU parameters
Only certain CPU parameters (object properties) can be edited in operation. These are
highlighted in the screen forms by blue text. If you have set blue as the color for dialog box
text on the Windows Control Panel, the editable parameters are indicated in black
characters.
NOTICE
If you edit any protected parameters, the system will reject any attempt to changeover to
the CPU containing those modified parameters. The event W#16#5966 is written to the
diagnostic buffer. and you will then have to restore the wrongly changed parameters in the
parameter configuration to their last valid values.
Table 17- 1 Modifiable CPU parameters
Tab
Start-up
Cycle/clock memory
Memory
Time-of-day interrupts (for each time-of-
day interrupt OB)
Watchdog interrupt (for each watchdog
interrupt OB)
Diagnostics/clock
Security
H parameter
Modifying these parameters also modifies the memory content.
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S7-400H
System Manual, 03/2012, A5E00267695-11
Editable parameter
Monitoring time for signaling readiness by modules
Monitoring time for transferring parameters to modules
Scan cycle monitoring time
Cycle load due to communication
Size of the process image of inputs
Size of the process image of outputs
Local data for the various priority classes
Communication resources: Maximum number of communication jobs.You may
only increase the configured value of this parameter
"Active" checkbox
"Execution" list box
Starting date
Time
Execution
Phase offset
Correction factor
Security level and password
Test cycle time
Maximum cycle time extension
Maximum communication delay
Maximum inhibit time for priority classes > 15
Minimum I/O retention time
System modifications during operation
17.7 Editing CPU parameters
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