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DX 0 - parameter assignment (S5-155U CPU 948)
1)
Time interrupts:
Time interrupt servicing:
Basic clock ( x 10 ms ):
Clock pulse processing:
Hardware process interrupts:
System interrupt A/B:
System interrupt E:
System interrupt F:
System interrupt G:
Process interrupts input byte 0 (only with interruptability at block boundaries)
Process interrupts:
F
F
1
2
1)
The delayed interrupt and clock-controlled interrupt must, if necessary, be activated extra
by switching off process interrupts (interrupt servicing on)
2) CPU 948: System interrupts can be serviced with "interruptability at
block boundaries" or "interruptability at operation boundaries"
Fig. 7-3
PG screen form for assigning parameters to DX 0 / Part 2
Using the screen forms
CPU 948 Programming Guide
C79000-G8576-C848-04
If you move on to the second screen form (Fig. 7-3) you will find the
following parameters:
- Time interrupts,
- Hardware process interrupts,
- Process interrupts input byte 0.
YES
10
1
2)
NO
NO
NO
NO
YES
F
F
4
3
Select
The following flow chart explains how to complete the screen forms
and fields, how to save the parameters and load a generated DX 0 data
block.
Examples of Parameter Assignment
Priority:
( 1 . . . 255 )
( 1 = factor 1, 2, 5, 10
2 = factor 1, 2, 4, 8 )
Priority:
Priority:
Priority:
Priority:
Priority:
F
F
5
6 Continue
DX 0
1
2
2
2
2
2
F
F
8
7
7 - 15
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