Standard
RLL
Instructions
5--77
Standard RLL Instructions
CPU Control Instructions
DL105 PLC User Manual, 3rd Edition
CPU Control Instructions
The No Operation is an empty (not
programmed) memory location.
NOP
Direct
SOFT
Handheld Programmer Keystrokes
NOP
SHFT
TMR
N
INST#
O
CV
P
ENT
The End instruction marks the termination
point of the normal program scan. An End
instruction is required at the end of the
main program body. If the End instruction
is omitted an error will occur and the CPU
will not enter the Run Mode. Data labels,
subroutines and interrupt routines are
placed after the End instruction. The End
instruction is not conditional; therefore, no
input contact is allowed.
END
Direct
SOFT
Handheld Programmer Keystrokes
END
SHFT
4
E
TMR
N
3
D
ENT
The Stop instruction changes the
operational mode of the CPU from Run to
Program (Stop) mode. This instruction is
typically used to stop PLC operation in an
error condition.
STOP
In the following example, when C0 turns on, the CPU will stop operation and switch
to the program mode.
Direct
SOFT
Handheld Programmer Keystrokes
STOP
C0
STR
$
SHFT
ENT
2
C
0
A
SHFT
RST
S
MLR
T
INST#
O
CV
P
ENT
SHFT
No Operation
(NOP)
End
(END)
Stop
(STOP)
Содержание DL105
Страница 2: ...DL105 PLC User Manual Manual Number D1 USER M...
Страница 308: ...1B DL105 Error Codes In This Appendix Error Code Table...
Страница 314: ...1C Instruction Execution Times In This Appendix Introduction Instruction Execution Times...
Страница 324: ...1D Special Relays In This Appendix DL105 PLC Special Relays...
Страница 327: ...1E PLC Memory In This Appendix DL105 PLC Memory...
Страница 329: ...1F European Union Directives CE In This Appendix European Union EU Directives Basic EMC Installation Guidelines...