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local registerHandle=mc.mcRegGetHandle(mInst,"modbus0/wrtvfdspeed")
local commandedSpeed=mc.mcSpindleGetCommandRPM(mInst)
local registerValue=(commandedSpeed/12000)*10000
mc.mcRegSetValue(registerHandle,registerValue) Hi,wow must be bad lol
I have just got back from work, been shifting stuff all day and I'm buggered again! I'm beginning to think that going to Church on a Sunday
may not be such a bad idea after all.
Craig
Hi,
I would guess at least a part of the code that you have installed is working, ie the VFD turns on and off and you can select FWD or REV,
so to bin it would be to 'throw the baby out with the bath water'.
What I would suggest is to put the proposed code in a macro so that you can run it in the editor. Once you have established that it works
to your satisfaction and you understand it thoroughly then and only then install it in the PLC script.
The reason I suggest this is because a macro executes just once, if there is a problem with it you can stop it, and/or single step through the code
until you understand what's going on. If you put it directly in the PLC script it will run every few milliseconds, and if it does something strange you may have
to crash Mach to get it to stop, not ideal.
For no particular reason lets call the macro m666:Code: [Select]function m666()
local mInst=mc.mcGetInstance()
local registerHandle=mc.mcRegGetHandle(mInst,"modbus0/wrtvfdspeed")
local commandedSpeed=mc.mcSpindleGetCommandRPM(mInst)
local registerValue=(commandedSpeed/12000)*10000
mc.mcRegSetValue(registerHandle,registerValue)
end
if(mc.mcInEditor()==1)then
m666()
end
Try installing that in the macros folder of your current profile. You need to single step through it using the debug functions of the editor.
Using single step is the sure-fire best way to understand how your code works, and even more importantly when it does not work!
Craig
Hi,
first please post a screen shot of the Regfile diagnostic, I need to see the register path.
Second, what number do you have to set in the register to cause a given speed?
Craig
Hi,QuoteI pasted that code into the lua file for the spindle control, but I had no success with that unfortunately
But it doesn't go in the spindle control file, wherever it is and whatever it is, it goes in the PLC script. The code is not completed,
you have to add some details, you'll not just be able to paste it in as is.
Craig
-----------------------------------------------------------------------------
-- Name: PMC Module
--Created: 03/27/2015
-----------------------------------------------------------------------------
-- This is auto-generated code from PmcEditor. Do not edit this file! Go
-- back to the ladder diagram source for changes in the logic
-- U_********* symbols correspond to user-defined names. There is such a symbol
-- for every internal relay, variable, timer, and so on in the ladder
-- program. I_********* symbols are internally generated.
local VFD_Spindle_controller = {}
local hReg, hSig, rc
local mInst = 0
-- Generated function for MachAPI.
local function Read_Register(path)
hReg, rc = mc.mcRegGetHandle(mInst, path)
if (rc == mc.MERROR_NOERROR) then
local value, rc = mc.mcRegGetValue(hReg)
if (rc == mc.MERROR_NOERROR) then
return value
end
end
return 0
end
-- Generated function for MachAPI.
local function Write_Register(path, value)
hReg, rc = mc.mcRegGetHandle(mInst, path)
if (rc == mc.MERROR_NOERROR) then
rc = mc.mcRegSetValue(hReg, value)
if (rc == mc.MERROR_NOERROR) then
return
end
end
return
end
-- Generated function for MachAPI.
local function Read_Signal(path)
hSig = 0
rc = mc.MERROR_NOERROR
hSig, rc = mc.mcSignalGetHandle(mInst, path)
if (rc == mc.MERROR_NOERROR) then
local state = 0;
state, rc = mc.mcSignalGetState(hSig)
if (rc == mc.MERROR_NOERROR) then
return state
end
end
return 0
end
-- Generated function for MachAPI.
local function Write_Signal(path, v)
hSig = 0
rc = mc.MERROR_NOERROR
hSig, rc = mc.mcSignalGetHandle(mInst, path)
if (rc == mc.MERROR_NOERROR) then
mc.mcSignalSetState(hSig, v)
end
end
-- Generated function for signal read.
local function Read_U_b_FSpindle_CW()
return Read_Signal(1142)
end
-- Generated function for signal read.
local function Read_U_b_FSpindle_CCW()
return Read_Signal(1143)
end
-- Generated function for signal read.
local function Read_U_b_FSpindle_ON()
return Read_Signal(1141)
end
-- Call this function to retrieve the PMC cycle time interval
-- that you specified in the PmcEditor.
function VFD_Spindle_controller.GetCycleInterval()
return 10
end
-- Call this function once per PLC cycle. You are responsible for calling
-- it at the interval that you specified in the MCU configuration when you
-- generated this code. */
function VFD_Spindle_controller.PlcCycle()
mInst = mc.mcGetInstance()
if (Read_U_b_FSpindle_CCW() == 0 and Read_U_b_FSpindle_CW() == 1 and Read_U_b_FSpindle_ON() == 1) then
Write_Register("modbus0/wrtvfdcmd0", 1)
elseif (Read_U_b_FSpindle_CCW() == 1 and Read_U_b_FSpindle_CW() == 0 and Read_U_b_FSpindle_ON() == 1) then
Write_Register("modbus0/wrtvfdcmd0", 2)
else --if Read_U_b_FSpindle_ON() == 0) then
Write_Register("modbus0/wrtvfdcmd0", 5)
end
local spindle_rpm = scr.DroRead(mInst, 27)
Write_Register("modbus0/wrtvfdspeed0", spindle_rpm/12000*10000)
end
return VFD_Spindle_controller
Hi,I noticed you have posted about this kind of thing a while ago - Do you use modbus spindle control yourself? If so do you mind sharing the script?
I gave you the outline of what is required in post #8. Did you try it?
Craig