Variable operands (not available for compact cards)
7.2.10.1 Function
Not all possible parameters can be selected as comparison operands via the list in do01.
To make comparisons with any parameters possible, 2 parameters can be selected in
do45[1 / 2] variable operand address , whose value is copied into do47 variable operand
value unsigned and do48 variable operand value signed.
do47 and do48 contain the same value, only their display in COMBIVIS is different.
do47/do48 must then be selected as comparison operand in the do table.
The comparison is only possible with do06 flag level 2, because do47/do48 cannot con-
tain a unit and no decimal places.
For the evaluation of parameters containing various information, the relevant bits can be
selected with do46 variabel operand mask.
7.2.10.2 Selection of the parameter
If an attempt is made to set an address that does not meet the requirements for variabel
operand address (e.g. parameter address does not exist), "invalid data" is returned.
7.2.10.3 Bit – Selection
Mask with which the values of the variable operands are AND con-
nected. If the value is FFFFFFFF, the value is output unchanged (plain
text "no mask"). This makes it possible, for example, to isolate only the
relevant bits (e.g. the ramp status) from ru75 global drive state and
perform a comparison on them. The position of the bits in "read para"
is not changed
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