Technical data

The bits of the double control word are assigned as follows:
Control
word bit no.
F u n c t i o n
0 = ’1’ all time-driven interrupts in fixed interval are
delayed
1 = ’1’ the clock-driven time interrupt is delayed
2 = ’1’
all process interrupts are delayed
3 = ’1’ the delay interrupt is delayed
4 to 31 reserved; these bits must be "0"!
2. Accus
2a) ACCU-2-L
Function No.
Permissible values: 1, 2 or 3 with:
1: The contents of ACCU 1 are loaded in
the control word.
2: All the bits in the mask in ACCU 1
marked with
"1" are set to "1". The new
control word is loaded in ACCU 1.
3: All the bits in the mask in ACCU 1
marked with
"0" are set to "1" in the
control word. The new control word is
loaded in ACCU 1.
2b)
ACCU 1
New control word or mask depending on the desired function.
6
OB 122: Enable/Disable "Delay of All Interrupts"
CPU 928B Programming Guide
C79000-B8576-C898-01
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