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Failure Diagnosis Functions
Section 6-8
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.
6-8-2
Failure Point Detection: FPD(269)
FPD(269) performs time monitoring and logic diagnosis. The time monitoring
function generates a non-fatal error if the diagnostic output isn’t turned ON
within the specified monitoring time. The logic diagnosis function indicates
which input is preventing the diagnostic output from being turned ON.
Time Monitoring
Function
FPD(269) starts timing when it is executed and turns ON the Carry Flag if the
diagnostic output isn’t turned ON within the specified monitoring time. The
Carry Flag can be programmed as the execution condition for an error pro-
cessing block. Also, FPD(269) can be programmed to generate a non-fatal
FAL error with the desired FAL number.
When an FAL error is generated, a preset message will be registered and can
be displayed on the CX-Programmer. FPD(269) can be set to output the
results of logic diagnosis (the address of the bit preventing the diagnostic out-
put from being turned ON) just before the message.
The teaching function can be used to automatically determine the actual time
required for the diagnostic output to go ON and set the monitoring time.
Logic Diagnosis
Function
FPD(269) determines which input bit is causing the diagnostic output to
remain OFF and outputs the result. The output can be set to bit address out-
put (PLC memory address) or message output (ASCII).
If bit address output is selected, the PLC memory address of the bit can be
transferred to an Index Register and the Index Register can be indirectly
addressed in later processing.
A
FAL
002
#0000
B
FALS
003
#0000
Summary of Contents for CP1L CPU UNIT - 03-2009
Page 1: ...Cat No W462 E1 06 CP1L CPU Unit SYSMAC CP Series CP1L L_0D_ CP1L M_0D_ OPERATION MANUAL...
Page 2: ......
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Conformance to EC Directives 6...
Page 70: ...36 Function Blocks Section 1 5...
Page 584: ...550 Trouble Shooting Section 8 7...
Page 627: ...593 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Page 630: ...596 Sample Application Section 9 12...
Page 654: ...620 Troubleshooting Unit Errors Section 11 4...
Page 662: ...628 Replacing User serviceable Parts Section 12 2...
Page 668: ...634 Standard Models Appendix A...
Page 698: ...664 Auxiliary Area Allocations by Function Appendix C...
Page 746: ...712 Auxiliary Area Allocations by Address Appendix D...
Page 773: ...739 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 774: ...740 Connections to Serial Communications Option Boards Appendix F...
Page 806: ...772 Index...
Page 808: ...774 Revision History...