Mitsubishi F2 PLC

[Steve Cheung]

Dear All, anybody have experience in use PLC F2-60MR where there is a function at the ladder such as F670, F671, F672 and F673? I need to convert the F2 into PLC FX2N. Thank you in advance. Best regards, Steve

[Rodney]

Steve The F2 P.L.C. has functional instructions to allow preperation of special programs such has high speed processing and data transfer, special applications of counter, arithmatics, analog data handling etc. F670 F671 F672 F673 are the basic configuration of the functional instructions. You can get a copy of the F2 manual in this forum which will explain in detail the functional instructions and the way they work. Rodney

[Crossbow]

I posted the F2 manuals here a long time ago. If they are not still here, go to www.meau.com and find them in the Downloads section. There is a programming manual that covers all of the commands.

[Steve Cheung]

Dear Friends.... Thanks a lot, I am on the site to replace the F1-60M to FX2N plc. No analog module attach at the PLC, when I try to convert the F1 ladder to FX2N, I am very stress out, because the functions I really donot know how to replace the F function into FX2N. The download file is quite big, my communicator internet access is very low speed. I attach the ladder that consist of F instructions. Hope you could advice the replacement. Thank you in advance. Best regards, Steve F1_60M.rtf

[Rodney]

Steve F670 K61 When true will increment the data register by 1 K700 is D700 so D700 would inrement by 1 F670 K38 When true willTransfer the same data in your case 0 would be transfered to K700 so d700 would be come 0. F670 K68 When true is subtract absolute D700 is subtracted by D701 and the result is put into D702 F670 K45 When true compares D702 and D703 if D702 is < than D703 then M573 on the next rung would be off if = M573 would be off if > M573 would be on F670 K40 when true compares K555 which could be a timer counter or date register to 0 when > M573 would be on. Having a manual is still quite important Good Luck Rodney

[Steve Cheung]

Hi Rodney, Thanks a lot for your help. I have download F1 programming manual from download section, but cannot find the function lower then 100. Is it in F2 manual? F2 manual is very big file, my internet mobile connection at the site is only 9.6kps. I still confuse about the bit that will on, after the comparasion, such as M573. I saw in an old existing ladder, there is 2 block of function use the same result bit, such as M573. Is it no effect between them? How about the process of F670 K72? Can you explain a little bit for F670 K40 when true compares K555 which could be a timer counter or date register to 0 when > M573 would be on. Thanks & best regards, Steve

[Rodney]

Steve I am glad you have been able to download a manual. When you see M570 M571 M572 M573 flags in a program it is only associated to the functional instruction that preceded it. If your F1 manual is the same as mine then there is a good example of F670 K40 on page 106. But if you look at your example starting at step 970 of your program. the timer counter or data register is 704. When it is less than or equal 58 M573 is off. When it becomes greater than 58 M573 will be on. F670 K72 is a decrement by 1 instruction and the example is on page 128. Hope this will help Rodney