Outputs/Coils will not turn on Q series

[stan_]

I'm also having issues, I've checked, and my main is in scan, but still, the output coil doesn't come on 

[Crossbow]

You should make your own post instead of posting on a 4 year old topic.

That being said, what PLC?  I see Inteligent Function Module in the project tree, which makes me think Q series.  And what do you have installed for modules?  Because in the rack PLCs, its not likely the input and output addresses will be one number apart like your program.

[Parky]

I agree with Crossbow, the FX for example can only have one main task as default & no initial program so must be a A or Q series. so the I/O can only be 16 differences or 32 or 128 for example 

If card 0 & 1 was 16 way input 16 way output those would be X0-XF & card 1 would be X10 to X1F

however, an FX with built in I/O you can have X0-7 & Y0 -7  for an 8 in 8 out 

[stan_]

On 10/6/2025 at 3:11 PM, Crossbow said:

You should make your own post instead of posting on a 4 year old topic.

That being said, what PLC?  I see Inteligent Function Module in the project tree, which makes me think Q series.  And what do you have installed for modules?  Because in the rack PLCs, its not likely the input and output addresses will be one number apart like your program.

My bad, on some other forums they'll not respond if I open as a new topic, attached below is the list of installed modules

[Crossbow]

Those addresses are assigned to the MB91 card, so you need to look at that manual to see what their purpose is. Each special module uses its IO allocation differently.

Your inputs start at X20 and outputs at Y30.

[stan_]

16 hours ago, Crossbow said:

Your inputs start at X20 and outputs at Y30.

Does this mean that if I'm to run a simple push button to LED program on a rung, the open bit would be addressed starting from X20 and output starting from Y30? Really sorry if these questions are not supposed to be asked, I'm moving from Siemens to Mitsubishi and haven't been able to get useful resources online, hence I'm having a lot of confusion

[Parky]

Yes that is correct. it is that simple

----| X20|--------(Y30)----|

It is the same as most PLC's some have built in I/O like the FX series where the I/O starts at X0-X27 (octal based so X0,1,2,3,4,5,67 then 20,21,22,23 & so on Note: On FX only base 8 any expansion cards follow on depending on the position.

Q series are a bit different where there is no built in I/O so as default the addresses will be allocated as per the card fitted for example if an Input card was in slot 1 and is a 16 way card the inputs are X0 to XF (as it is 16 way card) & so on, however, it is possible to change the actual addresses in the PLC Parameters but in reality that is not normal. special cards are often 16 bit or 32 bit  so again if a 32 way input card was fitted in slot 1 then the input numbers by default would be X0-X1F.

[Crossbow]

There are some basic online tutorials on the Mitsubishi website that might benefit you in learning the addressing of the controllers.