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425
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.
• 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 neces-
sary 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
Содержание CP1L-L14D Series
Страница 2: ...CP1L L14D CP1L L20D CP1L M30D CP1L M40D CP1L CPU Unit Operation Manual Revised June 2007...
Страница 3: ...iv...
Страница 9: ...x...
Страница 13: ...xiv TABLE OF CONTENTS...
Страница 21: ...xxii...
Страница 33: ...xxxiv Conformance to EC Directives 6...
Страница 65: ...32 Function Blocks Section 1 5...
Страница 153: ...120 CP CPM1A series Expansion I O Unit Wiring Section 3 6...
Страница 523: ...490 Troubleshooting Unit Errors Section 9 4...
Страница 531: ...498 Replacing User serviceable Parts Section 10 2...
Страница 563: ...530 Auxiliary Area Allocations by Function Appendix C...
Страница 611: ...578 Auxiliary Area Allocations by Address Appendix D...
Страница 638: ...605 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 639: ...606 Connections to Serial Communications Option Boards Appendix F...
Страница 669: ...636 Index...
Страница 671: ...638 Revision History...