Siemens SIMATIC S5 Manual page 23

Configuring with COM 115F
• Update user cycle time / interrupt handling: Max. time interval
Max. interval between two calls of FB 254 SYNC with
- Parameter
- Parameter
The interval between calls must be at least 1 msec shorter than the value configured.
If you do not want the user time update to be monitored, enter the value 16383.
If you do not want interrupt handling to be monitored, enter the value 255.
• Time interval for OB 13 ( 2.3.1)
If you do not use OB 13 in your control program, enter the value 0.
• Short discrepancy time for DIs without interrupt capability ( Vol. 1, 10.6 of the Manual)
• Short discrepancy time for DIs with interrupt capability ( Vol. 1, 10.6 of the Manual)
• Short discrepancy time for analog input modules
Define a uniform discrepancy time for configuration of analog input modules. In the case of
an analog input module discrepancy, the inputs are immediately scanned until the discrepancy
time has expired or the deviation lies between the defined discrepancy values.
If you enter 0 when setting parameters, the discrepancy time will be one PLC cycle.
• I/O modules: Error tolerance ( Vol. 1, 10.17 of the Manual)
The I/O error tolerance variant determines how the S5-115F responds to errors in the I/O
modules.
You have a choice of three I/O error tolerance variants (I/OETVs):
I/O ETV 1: All I/O errors result in PLC STOP
I/O ETV 2: Individual or technologically related modules can be deactivated via the 115F
operating system.
I/O-PFTV 3: Responses to I/O errors can be initiated via the user program (signal group 28)
I/O-PFTV 4: Responses to I/O errors can be initiated via the user program (signal group 27
and 28)
• DB No. for long discrepancy times
- Enter the number of the DB in which COM 115F is to store long discrepancy times.
or
- Enter a zero if you do not use long discrepancy times.
1-10
Time update
Interrupt handling ( 6.1.6)
S5-115F Manual
EWA 4NEB 811 6149-02