I want to replace an antiquated stepper relay with something more modern. The stepper relay is being used on an older Mazak turret lathe to provide feedback to the CNC control as to what tool station is currently being used.
The CNC control reads the part program information and when a tool change is called for the CNC sends a signal to a solenoid to index the tool turret to one of 8 tool stations. At the same time the CNC sends a +24 VDC signal to the stepper relay coil to advance the wiper to one of the 8 output contacts
(each output contact represents one of the 8 tools). The stepper relay is worn out and I want to replace it with something like a multiplexer or counter.
So basically, I want to come up with a circuit that uses one input to select 1 of 8 outputs and has to remember the last output when power is removed and then turned on again. Any good ideas will be greatly appreciated.
The CNC control reads the part program information and when a tool change is called for the CNC sends a signal to a solenoid to index the tool turret to one of 8 tool stations. At the same time the CNC sends a +24 VDC signal to the stepper relay coil to advance the wiper to one of the 8 output contacts
(each output contact represents one of the 8 tools). The stepper relay is worn out and I want to replace it with something like a multiplexer or counter.
So basically, I want to come up with a circuit that uses one input to select 1 of 8 outputs and has to remember the last output when power is removed and then turned on again. Any good ideas will be greatly appreciated.