12
FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instructions Edition
Table of Contents
35.2 Step Ladder............................................................................................................................... 834
35.2.1 Outline ....................................................................................................................................... 834
35.2.2 Explanation of function and operation ....................................................................................... 834
35.2.3 Expression of step ladder.......................................................................................................... 835
35.2.4 Creation of step ladder program (SFC program → STL program) ............................................ 836
35.2.5 Preliminary knowledge for creating step ladder programs ........................................................ 837
35.2.6 Program with state relays in branches and recombination........................................................ 840
35.2.7 Program examples .................................................................................................................... 844
36. Interrupt Function and Pulse Catch Function 850
36.1 Outline....................................................................................................................................... 850
36.2 Common Items.......................................................................................................................... 851
36.2.1 How to disable interrupt function and pulse catch function ....................................................... 851
36.2.2 Related items............................................................................................................................. 852
36.2.3 Cautions on use (common) ....................................................................................................... 853
36.3 Input Interrupt (Interrupt Triggered by External Signal) [Without Delay Function] .................... 855
36.3.1 Input interrupt (interrupt triggered by external signal) [without delay function] .......................... 855
36.3.2 Examples of practical programs (programs to measure short pulse width)............................... 859
36.4 Input interrupt (Interrupt by External Signal) [With Delay Function] .......................................... 861
36.5 Timer Interrupt (Interrupt in Constant Cycle)............................................................................. 862
36.5.1 Timer interrupt (interrupt in constant cycle)............................................................................... 862
36.5.2 Examples of practical program (timer interrupt programs using applied instruction)................. 863
36.6 Counter Interrupt - Interrupt Triggered by Counting Up of High Speed Counter....................... 866
36.7 Pulse Catch Function [M8170 to M8177].................................................................................. 867
36.8 Pulse width/Pulse period measurement function [M8075 to M8079, D8074 to D8097]............ 869
37. Operation of Special Devices (M8000 -, D8000 -) 873
37.1 Special Device List (M8000 -, D8000 -) .................................................................................... 873
37.1.1 Special Auxiliary Relay (M8000 to M8511)................................................................................873
37.1.2 Special Data Register (D8000 to D8511) ..................................................................................890
37.2 Supplement of Special Devices (M8000 - and D8000 -)........................................................... 909
37.2.1 RUN monitor and initial pulse [M8000 to M8003]...................................................................... 909
37.2.2 Watchdog timer [D8000]............................................................................................................ 910
37.2.3 Battery voltage low detection [M8005 and M8006].................................................................... 911
37.2.4 Power failure detection time [D8008, M8008 and M8007]......................................................... 911
37.2.5 Scan time (monitor) [D8010 to D8012]...................................................................................... 911
37.2.6 Internal clock [M8011 to M8014] ............................................................................................... 912
37.2.7 Real time clock [M8015 to M8019 and D8013 to D8019].......................................................... 912
37.2.8 How to set real time clock.......................................................................................................... 914
37.2.9 Input filter adjustment [D8020]................................................................................................... 916
37.2.10 Battery [BATT (BAT)] LED and [ALM] LED OFF command [M8030] ...................................... 917
37.2.11 Built-in analog volume [D8030 and D8031]............................................................................. 918
37.2.12 Clear command [M8031 and M8032] ...................................................................................... 919
37.2.13 Memory hold stop [M8033] (output hold in STOP mode) ........................................................ 919
37.2.14 All outputs disable [M8034] ..................................................................................................... 919
37.2.15 Individual operation for RUN/STOP input [M8035 to M8037].................................................. 920
37.2.16 Constant scan mode [M8039 and D8039]............................................................................... 921
37.2.17 State control in program with STL instruction/SFC chart [M8040]........................................... 921
37.2.18 Analog expansion boards [M8260 to M8279 and D8260 to D8279]....................................... 922
37.2.19 Analog special adapters [M8260 to M8299 and D8260 to D8299] .......................................... 924
38. Error Check Method and Error Code List 932
38.1 States and Colors of LEDs PLC Operation Status.................................................................... 932
38.1.1 POWER (POW) LED [lit, flickering or unlit] [FX3G/FX3U/FX3UC].............................................. 932
38.1.2 RUN LED [lit or unlit] [FX
3G/FX3U/FX3UC]................................................................................ 933
38.1.3 BATT (BAT) LED [lit or unlit] [FX
3U/FX3UC].............................................................................. 933
38.1.4 ALM LED [lit or unlit] [FX3G]...................................................................................................... 933
38.1.5 ERROR (ERR) LED [lit, flickering or unlit] [FX
3G/FX3U/FX3UC] ............................................... 934
38.1.6 L RUN LED [FX3UC-32MT-LT(-2)] ............................................................................................ 935
38.1.7 L ERR LED [FX
3UC-32MT-LT(-2)]............................................................................................. 935
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