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ample of how DIFU(13) can be used to ensure that CMP(20) is executed only
once each time the desired execution condition goes ON.
00000
CMP(20)
HR 10
DM 0000
Diagram A
22500
CMP(20)
HR 10
DM 0000
Diagram B
DIFU(13) 22500
00000
Address
Instruction
Operands
00000
LD
00000
00001
CMP(20)
HR
10
DM
0000
Address
Instruction
Operands
00000
LD
00000
00001
DIFU(13)
22500
00002
LD
22500
00003
CMP(20)
HR
10
DM
0000
Although a differentiated form of MOV(21) is available, the following diagram
would be very complicated to draw using it because only one of the condi-
tions determining the execution condition for MOV(21) requires differentiated
treatment.
22500
MOV(21)
HR 10
DM 0000
DIFU(13) 22500
00000
00001
00002
00003
00004
00005
Address
Instruction
Operands
00000
LD
00000
00001
DIFU(13)
22500
00002
LD
22500
00003
LD
00001
00004
AND NOT
00002
00005
AND NOT
00003
00006
OR LD
---
00007
LD 00004
00008
AND NOT
00005
00009
OR LD
---
00010
MOV(21)
HR
10
DM
0000
5-7-3
KEEP – KEEP(11)
B: Bit
IR, AR, HR, LR
Ladder Symbol
Operand Data Areas
S
R
KEEP(11)
B
Any output bit can generally be used in only one instruction that controls its
status. Refer to 3-3 IR Area for details.
KEEP(11) is used to maintain the status of the designated bit based on two
execution conditions. These execution conditions are labeled S and R. S is
Example 2:
Simplifying Programming
Limitations
Description
Bit Control Instructions
Section 5-7
Содержание SYSMAC C200H
Страница 1: ...OPERATION MANUAL C200H CPU01 E 03 E 11 E SYSMAC Programmable Controllers Cat No W130 E1 05 ...
Страница 2: ...C200H Programmable Controllers CPU01 E 03 E 11 E Operation Manual Revised June 2003 ...
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Страница 8: ...TABLE OF CONTENTS ix Glossary 345 Index 363 Revision History 369 ...
Страница 342: ...336 Programmer Program Date Page Word Contents Notes Word Contents Notes Data Storage ...
Страница 374: ...Cat No W130 E1 05 C200H Programmable Controllers CPU01 E 03 E 11 E OPERATION MANUAL ...