Probe AND HomeAll to one input, possible?

[Spartan117]

Hello,

i would like to know if it is possible to use one Input on the Acorn for two signals?

I thought about using probe and HomeAll on one input.
But LimitAll and HomeAll could also be a candidate for that on a mill.

The wizard seems to accept only one signal per input.
After a look at a "standard lathe plc" first it seemed to be easy:

acorn_lathe_plc.src:

Code: Select all

;------------------------------------------------------------------------------
;                        INPUT DEFINITIONS
;               Closed = 1 (green)  Open = 0 (red)
;------------------------------------------------------------------------------
Unused1                       IS INP1 ;&*;
Unused2                       IS INP2 ;&*;
Unused3                       IS INP3 ;&*;
Unused4                       IS INP4 ;&*;
Unused5                       IS INP5 ;&*;
Unused6                       IS INP6 ;&*;
Unused7                       IS INP7 ;&*;
EStopOk                       IS INP8 ;&*;
; #endregion

I thought, i will just have to change it like that:

Code: Select all

;------------------------------------------------------------------------------
;                        INPUT DEFINITIONS
;               Closed = 1 (green)  Open = 0 (red)
;------------------------------------------------------------------------------
HomeAll                       IS INP1 ;&*;
ProbeTripped                  IS INP1 ;&*;
Unused2                       IS INP2 ;&*;
Unused3                       IS INP3 ;&*;
Unused4                       IS INP4 ;&*;
Unused5                       IS INP5 ;&*;
Unused6                       IS INP6 ;&*;
Unused7                       IS INP7 ;&*;
EStopOk                       IS INP8 ;&*;
; #endregion

But it didn't work, i got lots of error-messages when compiling.
So before i start fiddling around for days now^^, i wanted to ask you guys first:
Is it possible to assign two different signals to the same input in the plc?

I have some ideas how to setup the "real" separation of the signals by hardware, but can someone tell me, if the PLC supports that "doubling" at all?

I know, easiest and best way would be to buy an Ether1616, but the hobby budget doesn't stretch that far in the near future

Thank you very much and with best regards,

Marc

[cnckeith]

post a fresh report.zip so we can see the input assignments

[Spartan117]

OK, i will try to get that in the right order, because i already tried some more and did some more testings.

First, I made a report like it was with all that modifications.
BUT keep in mind, i was really fiddling around in there, just testing by out-commenting the lines that threw an error when compiling, but without knowing what that really does. I just wanted to test the behaviour when assignig two signals to the same input, just for experimenting, no matter what other things could be affected for now.
I attached that report, but keep in mind, i wouldn't use such an unprofessional, noob-edited-src really, later )

THEN:
I just compiled a new, unmodified acorn_lathe_plc.src and there i only added the lines for the inputs from above (Probe=Inp6, HomeAll=Inp6), to be able to tell you the exact error-messages that the compiling threw out with them. This is the picture i attached.

But that means, the .src/.plc of the report doesn't exist anymore now, please keep that in mind. I want to start with a fresh .src without that uncommented lines, when i know if and how that 2 signals-1 input-thing works.


As i am asking for a general behaviour and not something regarding one special .plc i hope this doesn't cause too much of a problem now?
I will have to use a turret-lathe-plc for my emcoturn120 later, anyway.
But i thought, start low, go slow at first

[suntravel]

Both *.src from the report are compiling without errors....

Uwe

[Spartan117]

As I said, there I just did outcomment all lines that threw an error. But that's not a good solution I'd say

The errors occur with a fresh src that only has got that input-entries I posted above.

P.S.
Can please some native speaker tell me how I can say something like "I did uncomment", but in correct English?
That sounds weird, but I don't know how it's right? Uncommented? I am talking about "setting a semicolonto the front of the line". That is "outcomment", or not?

[suntravel]

Ok.

First Definition: ProbeTripped IS INP7
Second definition : ProbeTripped IS MEM217

This will not work because only one definition is allowed.

If something is defined as an input it can not be defined as a memory bit. The Wizard will also remove the definition as memory bit if you assign something as an input

Uwe

[Spartan117]

This is what I understood from some comments in the src, too.

So I set a semicolon in front of that line. But after "outcommenting" that line with "... is MEM217", it threw out the next error, something with many IF and THEN I didn't understand.
And as I did not know what that does, I was afraid to just outcomment that, too.

This is why I asked here if that "two signals one input thing" could work at all, before changing things I don't understand, yet.

[suntravel]

Pls write a Line
; Marc
before every line you change in the PLC, then it is faster for me to help you

Uwe

[suntravel]

;=============================================================================
MainStage
;=============================================================================
;------------------------------------------------------------------------------
; Configurable IO Section
;------------------------------------------------------------------------------

; These I/O used to be in the wizard section below but are not
; selectable in the Wizard itself.
IF True THEN RST Custom ; M35
IF True THEN RST LockSpindle

; DO NOT MODIFY
; #wizardregion Configuration
IF True THEN RST BackGear
;IF True THEN RST ProbeTripped
IF True THEN SET ProbeDetect, SET ProbeDetectDisabled_M

If something is defined as an input like ProbeTripped it can not be in this stage, because the PLC can only set/reset memory bits, but no inputs
so it is correct to place a ; here.

Uwe

[suntravel]

try this one and see what happens if INP7 is switched,

I would expect ProbeTripped while homing

Uwe