by Regardt Voigt | Mar 27, 2019 | Communication, GX Works 2, GX Works 3, i-QR, Q Series
MELSEC Q-Series to MELSEC iQR-Series Intercommunication Introduction Inter-PLC Communication between Melsec Q and Melsec iQ-R PLCs with GX-Works 2 and GX-Works 3 Sample programs. Downloads iQR-Series – GX Works 3 Program Q-Series – GX Works 2...
by Samantha Brink | Mar 26, 2019 | GX Works 2, Software
Latest Version of GX Works 2 Enhancements from GX Works2 1.577 to version 1.580: The following problem found in ‘Transfer Setup’ has been solved: When ‘GOT’ was selected for PLC side I/F after once selecting ‘RCPU’, the icon of...
by Regardt Voigt | Mar 21, 2018 | FX3U, FX5, GX Developer, GX IEC, GX Works 2, GX Works 3, PLC
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...
by Regardt Voigt | Mar 21, 2018 | GX Developer, GX IEC, GX Works 2, PLC, QSeries
Introduction GX Developer programming software allows the user to create more than one program within a single Qn PLC. This can be useful for structuring an application and/or for controlling program flow as each program can be triggered by any of the following...
by Regardt Voigt | Mar 20, 2018 | GX Developer, GX IEC, GX Works 2, GX Works 3, PLC, Q Series, QSeries
Introduction Many programmers know that labels (pointers) are used in program flow control (e.g. jump to label), but they may not know that labels are also used with function blocks. This document aims to explain the use of labels with function blocks and what can be...
by Regardt Voigt | Mar 20, 2018 | FX3U, FX5, GX Works 2, GX Works 3, PLC
Introduction FX PLCs do not have a simple switch for clearing/resetting latched memory. While this may not be a problem, it does need to be taken into consideration when creating PLC programs because, unlike modular PLCs such as the Q-Series, FX PLCs have default...
by Regardt Voigt | Mar 20, 2018 | GX Developer, GX IEC, GX Works 2, GX Works 3, Medoc, Software
Introduction Equality instructions such as the EQ_E (equals instruction), have an enable input. The normal expectation for this kind of instruction is that if the enable variable is FALSE (OFF, not active or zero), the result of the instruction will also be equal to...
by Regardt Voigt | Mar 1, 2018 | GT Works 3, GX Developer, GX IEC, GX Works 2, PLC, Software
Introduction GX Developer PLC programming software supports several ways of naming a device or I/O address, but by default the software displays the device address or alias but not both at the same time. This post explains how to display the device address, comment...
by Regardt Voigt | Mar 1, 2018 | FX3U, FX5, GOT HMI, GT Designer 3, GT Works 3, GX Developer, GX IEC, GX Works 2, GX Works 3, PLC, QSeries, Software
Introduction All special function modules used as part of a PLC system contain data stored in buffer memory. An example of this would be raw analogue input values from an analogue input module (special function module). Normally this information or data is transferred...
by Regardt Voigt | Feb 27, 2018 | FX3U, GT Works 3, GX Developer, GX IEC, GX Works 2, PLC
Introduction The FX3G and FX3U PLCs provide the facility to add ADP modules to the left-hand side of the PLC such as the FX3U-4AD-ADP (4 channel analogue input module). The data for these modules is automatically placed into specific data registers in the D8000 range....
