Click PLC Experience - Few Questions

[Chaz]

Ignore the code for a moment, and answer the electrical questions.

The turret encoder goes high when active, but does it actively switch low when not-active?
If it does actively switch low (and not just go high-impedance), then it might be able to switch the SZGH inputs directly, but it'll depend on the actual hardware inputs as to whether they'll reliably switch when they're driven to 12V instead of being left open circuit.

As long as the electrical side is switching reliably, then swapping logic is easy enough. In that code sample you posted, you just need to swap the + and -'s

Yep, 12V when high and 0V when not. This is on its on Power Supply. So not using the 0V or 24V from the controller. Should I join the grounds?

[m_c]

Yep, 12V when high and 0V when not. This is on its on Power Supply. So not using the 0V or 24V from the controller. Should I join the grounds?

Yes, the 0V will need connected.
My only concern is how the SZGH will handle having 12V on the input. I'd think it will work OK, but I'd be checking the relevant inputs are switching cleanly.

[Chaz]

Thanks. I'll try test tomorrow.

[Chaz]

Some progress. Joined the 0V and get a reading. Its not correct, it only picks up one tool location and it seems the reason for this is, this is the only place where you have 2 outputs in pattern (++ --). The rest dont get picked up so I need to check their logic, there might be something else but at least one works which suggests that it detects something and changes state due to it.

[m_c]

Have you checked all inputs are switching on the relevant diagnostics screen?
And the inputs reflect the turret position in the manual, even if they might be flipped?

[Chaz]

They are. Diag confirms but looks like I've not enabled the custom plc code via a tool menu. Will try it tomorrow.

[Chaz]

So, it doesnt work. Made the change, now it recognises none of the tool locations despite being able to see the 4 bit values change. I need to look at this all again. Ive messed wiht their code too, so back to basics.

[m_c]

Have you got a copy of the PLC programming manual I can look at?

[Chaz]

Yep, let me see if I upload it. HoodScotland did also link it before. I messed around again, it definately sees state change as it impacts where the turret thinks it is and stops but it doesnt show it nor match whats on the screen.

Ive also got the PLC editor and the code itself if you wanted to take a look. I can record what I see live on the machine too, what I dont understand is the relationship between the ProgramTool (M6 macro for lack of a better word) and their PLC config.

HoodScotland didnt change his PLC from what I understand. Certainly doing 4 bit to 8 discrete outputs via an Arduino might be a practical solution however this should work. The macro / turret logic is very simple.

[Chaz]

User Manual of Macro（V2.2）.pdfCustom macro program instruction.pdf

Documents. Ill try share the code and PLC program in a bit.

This is the macro and their explanation ....

PAUS100
STAF(Unclamp Turret!)
OUT+M63;unclamp
WAT+X06;T07,position of unclamp
STAF(Rotate & Select Tool!)
OUTPY18RY19
CASET1+X00-X01-X02-X03
CASET2-X00+X01-X02-X03
CASET3+X00+X01-X02-X03
CASET4-X00-X01+X02-X03
CASET5+X00-X01+X02-X03
CASET6-X00+X01+X02-X03
CASET7+X00+X01+X02-X03
CASET8-X00-X01-X02+X03
OUT-Y18-Y19
PAUS50
STAF(Clamp Turret!)
OUT-M63;clamp
WAT+X07; T08,position of clamp
TS(0)=TAIM
CURTS=TAIM
STATUSINFO(Tool Change is Finished!)
PAUS300
DISP
RETURN




Explanation.

M63:output for unclamp turret
reset for clamp turret

+T: CW Rotation_Turret
-T: CCW Rotation_Turret


T07: Input, Position of unlock turret
T08: Input for detecting position of lock turret