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407
Analog I/O Units
Section 7-4
Reading A/D Conversion Tables
Data converted from analog to digital is output to bits 00 to 07 in words m+1
and m+2.
Note
The Open-circuit Detection Flag is turned ON if the input signal range is set to
1 to 5 V or 4 to 20 mA and the input signal falls below 1 V or 4 mA. (Open cir-
cuits are not detected when the input signal range is set to 0 to 10 V.)
MOV(21)
MOVE instruction
Ladder program
Range code
Word n + 1
Word m + 1
Word m + 2
CPU Unit
Analog I/O Unit
Writes the range
code. Reads the
conversion value.
Analog input 1
conversion value
Analog input 2
conversion value
"m" is the last input word and "n" is the last
output word allocated to the CPU Unit, or
previous Expansion Unit or Expansion I/O Unit.
Analog devices
· Temperature sensor
· Pressure sensor
· Speed sensor
· Flow sensor
· Voltage/current meter
m + 1
15
m + 2
15
00
07
07
00
Analog input 1
Open-circuit
Detection Flag
0:
Normal
1:
Open-circuit
Analog input 1 conversion value (00 to FF hex)
Analog input 2
Open-circuit
Detection Flag
0:
Normal
1:
Open-circuit
Analog input 2 conversion value (00 to FF hex)
Содержание CP1H-CPU - 05-2006
Страница 1: ...OPERATION MANUAL CP1H CPU Unit SYSMAC CP Series CP1H X40D CP1H XA40D CP1H Y20DT D Cat No W450 E1 02...
Страница 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Страница 3: ...iv...
Страница 11: ...xii TABLE OF CONTENTS...
Страница 15: ...xvi...
Страница 19: ...xx...
Страница 31: ...xxxii Conformance to EC Directives 6...
Страница 71: ...40 Function Blocks Section 1 5...
Страница 133: ...102 Computing the Cycle Time Section 2 7...
Страница 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Страница 411: ...380 Clock Section 6 8...
Страница 519: ...488 Replacing User serviceable Parts Section 10 2...
Страница 527: ...496 Standard Models Appendix A...
Страница 535: ...504 Dimensions Diagrams Appendix B...
Страница 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Страница 659: ...628 PLC Setup Appendix G...
Страница 665: ...634 Index work words 159 write protection 370...
Страница 667: ...636 Revision History...