Ladder statement field, Points to note – IAI America XSEL-KX User Manual
Page 295
279
Part 4 Commands
2. Ladder Statement Field
(1) Extension conditions
LD
LOAD
A
AND
O
OR
AB
AND BLOCK
OB
OR BLOCK
All of the above extension conditions can be used in non-ladder tasks.
(2) Ladder commands
OUTR
Ladder output relay (Operand 1 = Output, flag number)
TIMR
Ladder timer relay (Operand 1 = Local flag number, Operand 2 =
Timer setting (sec))
3. Points to Note
• This system only processes software ladders using an interpreter. Therefore, the processing time is
much longer than that of a dedicated commercial sequencer.
(This system is not suitable for large-scale ladder processing.)
• If an extension condition is not specified for steps in which an input condition is specified, the steps
will be treated as LD (LOAD).
• Always specify a “normally ON” contact for those steps that must be processed without fail, such as
CHPR, TSLP and GOTO. (LD 7001)
Virtual input 7001: “Normally ON” contact
• The following circuit cannot be expressed. Create an equivalent circuit.
Cannot be expressed.
1
2
3
OUTR301
OUTR302