Show Posts
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
Hi,I pasted that code into the lua file for the spindle control, but I had no success with that unfortunately
I gave you the outline of what is required in post #8. Did you try it?
Craig
Hi,Yes definitely thought about it, but i am unsure as to how to write the code! This is the main problem and why i'm here asking for help! if i was a scripting guru i would have written the solution by now lol
have you thought about putting some code in the PLC script instead?
Craig
Guest
-----------------------------------------------------------------------------
-- 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,
Writing your own m3 would result in the speed register being updated only at each occasion m3 is called. Quasi continuous updates ocurr with the code in the plc script and is therefore preferred.
Craig
A couple of things to check:
Did you add the .lua file to the PMC and enable it through the screen editor?
Are your register names for the modbus exactly the same as it shows in the instruction? The PMC is writing to these specific register paths so it needs to match.