IAI ssel

261
Part 2 Programs
Chapter 6 Pseudo-Ladder Task
With the SSEL Controller, a pseudo-ladder task function can be used depending on the command and
extension condition.
The input format is shown below. Note that this function must be used by expert engineers with a full
knowledge of PLC software design.
1. Basic Frame
Extension condition N Input condition Command Operand 1 Operand 2 Output
E Cnd Cmnd Pst
LD 7001 CHPR 1
TPCD 1
TAG 1
l l l l
l l l l
l l l l
l l l l
l l l l
l l l l
LD 7001 TSLP 1 ~ 100
l l l l
l l l l
l l l l
l l l l
l l l l
l l l l
LD 7001 TSLP 1 ~ 100
LD 7001 GOTO 1
LD 7001 EXIT
* * Virtual input 7001: “Normally ON” contact
Ladder
statement
field
Ladder
statement
field