Posted 11 Dec 2020 Hi, I am completely new to mitsubishi PLCs, I have a beckhoff back ground. I have to familiarise myself with Gx works 2 for a project in the new year, I have some sample programs that I am trying to understand. The program I am looking at (I cant post NDA) has 5 tasks with a bunch of POUs in each task. When you hover over a task it pops up with attributes like always,event... Could anyone point me in the direction of some documentation that explains how tasks work and how to set theses attributes? I tried looking at some manual but cant find any description of this. Many thanks Share this post Link to post Share on other sites
Posted 12 Dec 2020 Hi Jhops123, have a look at Q-Series Basic & Advanced Course (for GXWorks2): https://eu3a.mitsubishielectric.com/fa/en/dl/12449/SH(NA)-081123ENG-A.pdf https://eu3a.mitsubishielectric.com/fa/en/dl/12448/SH(NA)-081124ENG-A.pdf the task settings are descibed in chapter "6.2 Program execution management" of the Advanced Course (second link) you should also have a look at GXWorks2 Operating manual https://eu3a.mitsubishielectric.com/fa/en/dl/9541/sh080779.pdf regarding your question about the tasks: - Initial Programs will be executed once after startup - Scan Programs are the default and will be cyclic executed - Fixed Interval Programs are similar to Scan Programs, but use a fixed cycle time, that can be set in the Program Settings; Fixed Interval Programs are only executed when Interrupts are enabled (with the 'EI' Instruction) from within another 'Scan' or 'Init' Program - No Execution Type programs won't be executed, usefull to temporary disable a program - Wait Programs: programs that are executed on request (e.g sub-routines, interrupts, events) hope this helps Share this post Link to post Share on other sites
Posted 13 Dec 2020 Hi Andreas, thanks for the reply much appreciated! I will have a read of those manuals. Share this post Link to post Share on other sites
Posted 13 Dec 2020 Hi Andreas, thanks for the reply much appreciated! I will have a read of those manuals. Share this post Link to post Share on other sites
Posted 13 Dec 2020 This link is your friend: https://www.mitsubishielectric.com/fa/assist/e-learning/eng.html Share this post Link to post Share on other sites