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409
Analog I/O Units
Section 7-4
Handling Unit Errors
• When an error occurs in the Analog I/O Unit, analog input data will be
0000 and 0 V or 4 mA will be output as the analog output.
• CPM1A Expansion Unit/Expansion I/O Unit errors are output to bits 0 to 6
of word A436. The bits are allocated from A436.00 in order starting with
the Unit nearest the CPU Unit. Use these flags in the program when it is
necessary to detect errors.
Programming Example
This programming example uses these ranges:
Analog input 0: 0 to 10 V
Analog input 1: 1 to 5 V or 4 to 20 mA
Analog output: 0 to 10 V or 4 to 20 mA
MOV(021)
2
D0
0
Always ON
P_On
TIM
T0
TIM 0 will start as soon as power turns ON.
After 0.2 to 0.3 s (200 to 300 ms), the input for
TIM 0 will turn ON, and the converted data
from analog input 0 that is stored in word 2
will be transferred to D00000.
#3
MOV(021)
#FF04
102
First Cycle ON Flag
A200.11
Always ON Flag
P_On
10
D0
T0
T0
MOV(021)
3.15
110.00
3
D1
T0
MOV(021)
D10
102
T0
MOV(021)
Execution
condition
Execution
condition
Execution
condition
Execution
condition
←
Writes the range code (FF04) to the Unit.
←
Reads analog input 0's converted value.
Open-circuit alarm
←
Reads analog input 1's converted value.
←
The content of D10 is written to the output
word as the analog output set value.
0
TIM
#3
Summary of Contents for CP1H-CPU - 05-2006
Page 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Page 3: ...iv...
Page 11: ...xii TABLE OF CONTENTS...
Page 15: ...xvi...
Page 19: ...xx...
Page 31: ...xxxii Conformance to EC Directives 6...
Page 71: ...40 Function Blocks Section 1 5...
Page 133: ...102 Computing the Cycle Time Section 2 7...
Page 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Page 411: ...380 Clock Section 6 8...
Page 519: ...488 Replacing User serviceable Parts Section 10 2...
Page 527: ...496 Standard Models Appendix A...
Page 535: ...504 Dimensions Diagrams Appendix B...
Page 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Page 659: ...628 PLC Setup Appendix G...
Page 665: ...634 Index work words 159 write protection 370...
Page 667: ...636 Revision History...