GSM Modem Settings in GX IEC Developer

Introduction For many years users of GX IEC Developer have wanted to remotely program a PLC via a serially connected GSM modem, however, the modem settings selection is “greyed out”. This document explains how to access these GSM modem settings. Design Constraints...

Disable all FX PLC outputs

Introduction It is sometimes a requirement to run a PLC program for testing without affecting the actual real outputs. There we discribe how this can be carried out on FX PLCs. Design Considerations To be able to run a PLC program in a test mode such that the program...

CC-Link master differences

Introduction From time to time, Mitsubishi products are updated and therefore there will be some differences. This document details the differences between the old and new versions of the Q PLC CC-Link master module and any precautions when swapping from an old to new...

Programming access to FX3U via CC-Link

Introduction In some systems it can be a requirement to be able to program any and all PLCs from a single connection point when the PLCs are connected together on a network. To this end a typical system may consist of a Q-Series modular PLC as a CC-Link network...

FX3U High Speed I/O

Introduction The FX3U PLC supports up to 2 left-hand side high speed Input modules of the FX3U-4HSX-ADP type. When adding these modules there are some rules and limitations. Design Considerations The FX3U-4HSX-ADP uses the same first few inputs as the main FX3U PLC,...

Memory cards for Q-Series PLCs

Introduction There are 3 different types of memory cards available for Q-Series PLCs and it is important to choose the correct one as they do not all support the same features. The 3 types are SRAM (RAM), Flash (ROM) and ATA (ROM). Design Considerations It is...

Setting data from a GOT

Introduction It is sometimes a requirement of an HMI application to write a fixed or variable value to a data register in a PLC at the touch of a button. This document explains how this can be done with any current range GOT HMI. Design Considerations With an HMI...

Inverter analog output calibration

Introduction The analog output of an inverter (VSD) is sometimes used as an input to third party devices to give an indication of inverter running speed, for example. To give an accurate indication of speed it is sometimes necessary to calibrate the analog signal as...