22487
« on: July 30, 2008, 04:46:59 AM »
As can be seen the modbus signal to start is Modbus 9, if the rack is back (switch LS24) then the output Y7 is activated to unclamp the turret, when the turret unclamped signal is present the output to rotate the turret is activated (rack fwd output). The signal for rack forward is now present so the turret clamp signal is lost and the turret clamps, the turret clamping loses the signal for the rack so it now moves back to the start and the routine repeats and repeats until the signal from the tool chosen is seen by Mach, Mach then stops the Modbus signal to the PLC and the indexing is complete.
As can be seen Mach always knows which tool is present from the signals it gets from LS 20, LS 21 and LS22 and unless the turret is clamped it will not see these signals.
Hood