Parker FL20-S Series, Manual

Page: 220 / 347

FL20-S Series
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LD B1 IF
（
B1
）
Similar as normally-open contact in PLC, if variable is TRUE,
then contact is closed, and start to execute next instruction;
LDI B2 IF
（！
B2
）
Similar as normally-closed contact in PLC, if variable is TRUE,
then contact is open;
(2)
“And” Instruction
There are 2 “And” Instructions, see details as below:
Instruction Format: [AN□ X]
Instruction Description:
ANis logic instruction, □ means reversing program or not, X means register
address; execute “and” instruction with last instruction for X register address; See details as table 8.1.12
Table 8.1.12 “AND”Instruction Syntax, Results and related Annotations
Syntax Expression Running Result Annotations
AND B16 &B16
B16 register address executes “and” instruction with last
instruction;
ANI B17 &
（！
B17
）
Reversing the content of B17 register address, then executes“and”
instruction with last instruction;
ANB
“AND” instruction of series circuits with two or more contacts
(3)
“OR” Instruction
There are 2 “or” instructions, see details as below:
Instruction Format: [OR□ X]
Instruction Description:
OR is logic instruction, □ means reversing program or not, X means register
address; Execute “or” instruction with last instruction for X register address;
Table 8.1.13 “OR” Instruction Syntax, Results and related Annotations
Syntax Expression Running Result Annotations
OR B5 |
（
B5
） B5 register address executes “or” instruction with last instruction;
ORI B7 |
（！
B7
）
Reversing the content of B7 register address, then executes“or”
instruction with last instruction;
ORB
“OR” instruction of series circuits with two or more contacts
(4) Exclusive OR Instruction
There are 2 xor instructions, see details as below:
Instruction Format: [XOR□ X]
Instruction Description:
XOR is logic instruction, □ means reversing program or not,X means register
address; Execute “XOR” instruction with last instruction for X register address;
Table 8.1.14 “XOR” Instruction Syntax, Results and related Annotations
Syntax Expression Running Result Annotations