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374
Failure Diagnosis Functions
Section 6-7
6-7
Failure Diagnosis Functions
This section introduces the following functions.
• Failure Alarm Instructions: FAL(006) and FALS(007)
• Failure Point Detection: FPD(269)
• Output OFF Bit
6-7-1
Failure Alarm Instructions: FAL(006) and FALS(007)
The FAL(006) and FALS(007) instructions generate user-defined errors.
FAL(006) generates a non-fatal error that allows program execution to con-
tinue and FALS(007) generates a fatal error that stops program execution.
When the user-defined error conditions (i.e., the execution conditions for
FAL(006) or FAL(007)) are met, the instruction will be executed and the follow-
ing processing will be performed.
1,2,3...
1.
The FAL Error Flag (A402.15) or FALS Error Flag (A401.06) is turned ON.
2.
The corresponding error code is written to A400.
3.
The error code and time of occurrence are stored in the Error Log.
4.
The error indicator on the front of the CPU Unit will flash or light.
5.
If FAL(006) has been executed, the CPU Unit will continue operating.
If FALS(007) has been executed, the CPU Unit will stop operating. (Pro-
gram execution will stop.)
Operation of FAL(006)
When execution condition A goes ON, an error with FAL number 002 is gener-
ated, A402.15 (FAL Error Flag) is turned ON, and A360.02 (FAL Number 002
Flag) is turned ON. Program execution continues.
Errors generated by FAL(006) can be cleared by executing FAL(006) with FAL
number 00 or performing the error read/clear operation from the CX-Program-
mer.
Operation of FALS(007)
When execution condition B goes ON, an error with FALS number 003 is gen-
erated, and A401.06 (FALS Error Flag) is turned ON. Program execution is
stopped.
Errors generated by FAL(006) can be cleared by eliminating the cause of the
error and performing the error read/clear operation from the CX-Programmer.
A
FAL
002
#0000
B
FALS
003
#0000
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...