7
FX3G Series Programmable Controllers
User's Manual - Hardware Edition 
Table of Contents
12.3  External Wiring for Triac (SSR) Output Type ............................................................................ 150
12.3.1  Handling of triac output.............................................................................................................. 150
12.3.2  External wiring precautions ....................................................................................................... 151
12.3.3  Example of external wiring ........................................................................................................ 152
13.  Examples of Wiring for Various Uses 153
13.1  Notes about Examples of Wiring............................................................................................... 154
13.2  Digital Switch [DSW Instructions (FNC72)/BIN Instructions (FNC19)]...................................... 155
13.2.1  When DSW instructions are used.............................................................................................. 155
13.2.2  When BIN instructions are used................................................................................................ 157
13.3  Input Matrix [MTR Instructions (FNC 52)] ................................................................................. 158
13.4  Seven Segment with Latch [SEGL Instructions (FNC74)/BCD Instructions (FNC18)].............. 160
13.4.1  When SEGL instructions are used ............................................................................................ 160
13.4.2  When BCD instructions are used .............................................................................................. 162
14.  Test Operation, Adjustment, Maintenance and Troubleshooting 164
14.1  Preparation for Test Operation.................................................................................................. 165
14.1.1  Preliminary inspection [power OFF] .......................................................................................... 165
14.1.2  Connection to built-in programming connector (RS-422) .......................................................... 165
14.1.3  Connection to built-in programming connector (USB) ............................................................... 166
14.1.4  Writing of program and program check [power ON and PLC stopped] ..................................... 167
14.2  Running and Stopping Procedures [Power ON]........................................................................ 168
14.2.1  Methods of running and stopping .............................................................................................. 168
14.2.2  Use of several running/stopping methods ................................................................................. 169
14.3  Operation and Test [Power ON and PLC Running] .................................................................. 170
14.3.1  Self-diagnostic function ............................................................................................................. 170
14.3.2  Test functions ............................................................................................................................ 170
14.3.3  Program modification function ................................................................................................... 170
14.3.4  Built-in variable analog potentiometer function.......................................................................... 171
14.4  Maintenance and Periodic Inspection ....................................................................................... 172
14.4.1  Procedures for checking model name ....................................................................................... 172
14.4.2  Periodic inspection - battery life, etc.......................................................................................... 172
14.4.3  Maintenance -  product life of relay contacts............................................................................. 173
14.5  Troubleshooting with LEDs ....................................................................................................... 175
14.5.1  POW LED [on/flashing/off]......................................................................................................... 175
14.5.2  ALM LED [on/off] ....................................................................................................................... 175
14.5.3  ERR LED [on/flashing/off].......................................................................................................... 176
14.6  Judgment by Error Codes and Representation of Error Codes ................................................ 177
14.6.1  Operation and check by GX Developer ..................................................................................... 177
14.6.2  Operation and check on display module (FX
3G-5DM) .............................................................. 178
14.6.3  Representation of errors............................................................................................................ 179
14.6.4  Error Code List and Action ........................................................................................................ 180
14.7  Troubleshooting ........................................................................................................................ 186
14.7.1  Output does not operate (main unit and input/output extension blocks) ................................... 186
14.7.2  24V DC input does not operate (main unit and input/output extension blocks)......................... 186
14.7.3  Cautions in registering keyword ................................................................................................ 187
15.  Input/Output Powered Extension Units 188
15.1  Outline....................................................................................................................................... 190
15.1.1  Product configuration................................................................................................................. 190
15.1.2  Product list................................................................................................................................. 190
15.2  Power supply specifications ...................................................................................................... 191
15.2.1  Weight, accessories, etc............................................................................................................ 191
15.2.2  Part names ................................................................................................................................ 192