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Analog I/O (XA CPU Units)
Section 5-5
Handling Unit Errors
When an error occurs in the built-in analog I/O system, analog input data will
be set to 0000 and the analog output will be set to 0 V or 0 mA.
If a CPU error occurs, the analog output will be set to is set to 0 V or 0 mA
even if the output range is 1 to 5 V or 4 to 20 mA. For any other fatal errors in
the CPU Unit, 1 V or 4 mA will be output if the output range is 1 to 5 V or 4 to
20 mA.
!Caution
If an interrupt task program is executed continuously for more than 6 ms, the
built-in analog function will not operate properly and a Built-in Analog Error
will occur. When using the built-in analog function, design the system so that
interrupt task programs are not executed too long or too frequently. Test the
system thoroughly in trial operation before operating the system.
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...