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OB 143: "Delay Single Cyclic Timed Interrupts" On/Off
Result
6 - 36
2. ACCUs
2a) ACCU-2-L
Function no.,
Permitted values:
1, 2 or 3 where:
1:
2:
3:
2b) ACCU 1
New control word or mask depending on the required function.
After correct and error-free processing the system program sets the
RLO to '0'.
Calling OB 143 has the following results:
Funct. no.
in ACCU-2-L
1
control word
2
3
The contents of ACCU 1 are loaded in the
control word.
All the bits marked '1' in the mask in
ACCU 1 are set to '1' in the control word.
The new control word is loaded in ACCU 1
All the bits marked '1' in the mask in
ACCU 1 are set to '0' in the control word.
The new control word is loaded in ACCU 1
Contents of ACCU 1
before
control word
mask
control word
mask
control word
CPU 948 Programming Guide
C79000-G8576-C848-04
after
new
new
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