Gambit

You can download the latest version via your MyMitsubishi Account. V1.662 is the latest one i think

That's not how you search. Download the latest manuals if needed. Then patse  SH081257ENG-8C2 in the search bar but change the [ALL] button into See attached doc e-Manual Viewer Page ID and KB Doc ID Guide.PDF

Not that i am aware of. Also GX Developer is not supported anymore

Have a look op PAGE ID : SH081257ENG-8C2 of the e-manual viewer. Checking the simple CPU communication status.

Upgrade from GX Developer to GX Works and under option in GX Works 2. Set Display STL instruction in contact format

If you are going to Cange you might aswell change to GX Works 2 which still support the FX series up to FX3. As for STL is was a languge to do SFC. GX Developer and GX Works 2 both support SFC. Have you looked at this ?  

Check the How to use 2-phase 2-counting input counters C251 to C255 for 4-edge counting in the FXCPU Structured Programming Manual. It has to be continious on for the X00- X07 inputs to be used for counting, When it is not on the couter is off   

Look like you have all the communication running right ? So you question is where you can find the status of simple PLC comms ?  

The instruction is explained on page JY997D55801-2EA of the e-manual viewer.   LabelExampl.gx3

Ther is no code attached, However I'll make a quick example of the ladder code from the previous mail in label style.  

Good morning. You did find it but the element dimensionis only 1. It should be 2. Also there is a easy way to cretae the correct label type. When using the instrcution just type an unknown vaiable name. Then it will prompt for a label declaration and the right type is alreayd pre selected.  

 OUT_C_32  is needed to activate the high speed counter Dmov is for the values  

There is a difference between C250 and C251. 1-phase 2-count input & 2-phase 2-count input To activate the counter use OUT_C_32 instruction As for the monitoring keep in mind that the program is running much faster then you are monitoring.  So many scan have been processed which changed some values. Active open or closed is only what you programmed the depending on the value of the bit it will be filled blue. So a normally closed which bit is off will be blue filled p.s. For real production i would not use a clone !!!!!

You should use labels than you would have gotten an error,  Some instructions Like multiplcation the result is 32 bit so it uses 2 Registers. So if you enter D120 (it's also D121) When you use labels you have to define the type so you would have gotten a notification when building the project

During installation you didn't set start automatically when booting the PC. So it looks like the OPC server has't started. Have you started the server ? Basicallly your screencapture is already providing the correct steps   

Which Firmware are you running ?   As for Dianostics:

https://www.mitsubishielectric.com/fa/document/technews/got/got-a-0160/gota0160ac.pdf You need a USB -A on the GOT. The mini USB is only for data transfer

Then I expect there is something in the code on start-up. chianging the values

Just Change M to an L device. Those are latched 

Then D2842  should be lachted, So it's either overwritten in the program (maybe an inital program) somewhere after a reboot  or the  battery has died. Is there a yellow LED lit on the CPU? Can you check the parameters if the battery detection is disabled 

You'll need to Latch  D2842 in the PLC parameters. which controller are you using ?

Okay In GX works 3 goto the CPU parameters. Service processing settings and give more time for communication

Maybe you should start in steps and get network running with the stations. after that refresh the correct Registers/adresses. And than the need programming  There is an e-learnig for CC-Link. you should follow this first https://www.mitsubishielectric.com/fa/service-support/global/e-learning/pdf/eng/1-CC-Link_iQ-R_na_eng-A.pdf  

Did you use different stationnumbers for the connections ? Do you communicate large amounts of data  ? What is the scan time of the PLC's ?    

Why ??? you can do this easlly with the simple PLC comm settings. Ypu don't need any programming   OR if the FX5 is just the server just create a modbus port in the port settings and you're done