REQUEST: Pointers within MRX/WRX (Comm) blocks

[Mike@Forshock]

Would like to be able to use pointers with the communications blocks (MRX/MWX, etc.) for Status Bits.

Added rough example.

Can make reusable, repeated code with only a pointer (not within loops  ).
I can see how this could pose a challenge as the instructions are multi-scan and if the index/pointer is changed it would need to be stored within the code behind the scenes and some users may not realize this.  Perhaps only on the enable/power flow the pointer is stored?

[franji1]

What you are trying to do is very do-able as-is.

I see you are not doing it on leading edge, but in power flow at a variable interval.

I would recommend sticking it in a Stage program by itself and exit on success or completion (after moving those bits using array based OUT coils).

Basically, from $Main, before every RUN, you set your V's appropriately in the rung where you RUN this code block.

Also, with serial comm, you can only do one at a time anyway, so this single code block could work for a bunch of slaves, with $Main pacing the RUN based on your desired poll interval.

[Mike@Forshock]

Didnt think of the stages because there is other code that is within the program that needs to process whether waiting for Success/Fail or not.

Creating a stage for each Success/Fail and for each MRX/MWX (different registers, coils, etc.) could get quite messy. 
With a JMP within the MRX/MWX, would this disable the Power Flow/Enable for the additional instructions?

Will give that a shot to test regardless, thanks.

[franji1]

$Main intializes all the indirect array values.

Stick it in its own program code block that has a few stages in it.  RST both array-based Success/Error bits, does the MRX w/indirect addressing JMPing to the corresponding OnSuccess or OnError where it SETs the array-based Success XOR Error bit, EXIT

$Main tracks the .Done bit of that code block.  When it's done, adjust the V index accordingling, RUN again.  Even that could be in its own mid-level stage PROGRAM, keeping $Main nice and clean.