Programming Instructions
R 02/92
Assignment of special function for inhibit interrupt depending on direction
DW 185
Enable for interrupt direction specification
DW 186
Free
Bit pattern for
IR–direction
When the current “actual position” exceeds a cam end or cam start setpoint, the module does not
generate an interrupt unless the appropriate interrupts were enabled. The interrupt is triggered
when the applicable threshold value is reached.
The “inhibit interrupt depending on direction” special function can be used to inhibit the triggering
of one interrupt for one or both direction. This function is enabled by entering a number not equal
to KH = FFFF in data word DW 185 of the user data block. When this function is enabled, the bit
pattern of data word
DR
186 is transferred to the
1P
module and the desired interrupt direction is
inhibited for one or both channels. The selection of the desired “interrupt direction” is shown be-
low.
I I
O 0 Enabled for both directions
O 1 Inhibited, backwards
10 Inhibited, forwards
1 1 Inhibited, both directions
Addressing the module
(S5-155U)
For correct operation of the function block, the module “digital position decoder
1P
241” must be
addressed in the address range from KH =
FF080
to KH = FF1
FE
This corresponds to the
P–
range from KH =
FF080
to KH = FFOFF (byte number 128 to 255) and to the Q–range from KH =
FF1OO to KH =
FFIFF
(byte number O to 255).
:
beginning of a cold restart.
9 – 10
1P
241 Equipment Manual
@SiemensA(21989, order No.: 6ES5998-0KD21
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