The meaning of the values is identical for do20…do27.
select flag O1…OC, Relais
If several function blocks are selected
for one output, the selected flags are
OR-connected (output is set if at least
one flag is set) or AND-connected
(output is set if all assigned flags are
set).
The type of connection is defined in
do19.
Result linked function blocks 1
Result linked function blocks 4
Selected flags for O1 are AND linked
Selected flags for O1 are AND linked
Selected flags for O2 are OR linked
Selected flags for O2 are AND linked
Selected flags for O3 are OR linked
Selected flags for O3 are AND linked
Selected flags for O4 are OR linked
Selected flags for O4 are AND linked
Selected flags for OA are OR linked
Selected flags for OA are AND linked
Selected flags for OB are OR linked
Selected flags for OB are AND linked
Selected flags for OC are OR linked
Selected flags for OC are AND linked
Selected flags for the relay are OR linked
Selected flags for the relay are AND linked
7.2.12.2 Example
Example: Output O1 shall be set if the 3 inputs I1 and I2 and I3 are set:
Definition Flag 1 (I1 set => Bit 0 ru18 set):
do01 flag operand A [1] = 18 “dig. input state (ru18)”
do02 flag operand B [1] = 28 “level 2 (do06)”
do06 flag level 2 [1] = 1
do03 flag operator mode [1] = 3 “AND”
Definition flag 2 (I2 set => Bit 1 ru18 set):
do01 flag operand A [2] = 18 “dig. input state (ru18)”
do02 flag operand B [2] = 28 “level 2 (do06)”
do06 flag level 2 [2] = 2