Posted 18 May 2018 Hi Guys, I,m fairly new to programming but I,m (kind of) OK at the basices. Years back I used to have a play with the old Basic Program on an ordinary PC. A very handy command in Basic was the "If, Then, Else " statement. I was just kind of wondering if a similar thing was available when programming an Fx Plc in GX works 2, (eg FX3ge). For instance if value DB*** (Outside temperature) is greater than DB### (Inside temperature) then output Y001 else output Y000. I,m also going to have my very first go at Analog Input/Output programming a temperature sensor to control the speed of a cooling fan so expect to hear a lot more from me LOL Many thanks Del Share this post Link to post Share on other sites
Posted 18 May 2018 It is possible but it will use a lot of your pointers. It woud be better to use an FX5 but it is possible. 1 person likes this Share this post Link to post Share on other sites
Posted 18 May 2018 That isn't really how ladder logic works, it doesn't really do 'else' unless as suggested you go for a PLC with structured text (ST) language option. In ladder one options would be: IF --[> DB*** DB###]------------------------------------(M1)--- THEN --|M1|-------------------------------------------------(Y0)----- ELSE --|/ M1|------------------------------------------------(Y1)----- 1 person likes this Share this post Link to post Share on other sites
