Omron SYSMAC CP Series Instruction & Reference Manual page 78

2 Instructions
Operation of Differentiated Instructions
If there is a differentiated instruction (DIFU, DIFD, or instruction prefixed by @ or %) between IL(002)
and ILC(003) instructions, that instruction will be executed when the interlock is cleared if the differenti-
ation condition of the instruction is satisfied by means of a change in the input condition between start-
ing and clearing of the interlock.
Example:
When a DIFFERENTIATE UP (DIFU(013)) instruction is used and the input condition is OFF when the
interlock starts and ON when the interlock is cleared, the DIFFERENTIATE UP (DIFU(013)) instruction
will be executed when the interlock is cleared.
0.00
1. When 0.00 is OFF (interlock starts), input condition 0.01 of DIFU is OFF.
2. Input condition 0.01 of DIFU goes from OFF to ON while 0.00 is OFF (interlock in effect),
3. When 0.00 goes from OFF to ON (interlock cleared), the DIFU instruction is executed if input condition 0.01 of DIFU is ON.
0.01
Reference:
An IL(002) instruction operates in the same way as an MILH(517) instruction in relation to differentiated
instruction operation.
Timing Chart
2-42
IL
DIFU
10.00
ILC
Not interlocked Interlocked
ON
0.00
OFF
ON
0.01
OFF
OFF
ON
10.00
OFF
i
Not interlocked
ON Differentiation condition is satisfied
The DIFU(013) instruction is executed.
1 cycle
CP1E CPU Unit Instructions Reference Manual(W483)