Much of the explanation does NOT make any rational sense, since it's obvious that it was transliterated from Chinese to English. The instructions supplied on a mini-CD are absolutely My problem is in getting this ST-PMC1 Controller to work. My problem is NOT with the mechanics OR the Ladder programming for the PLC to control the machine's cycle. ![]() OR, sometimes there are 2 'works done, so the Turret Arm moves between the 0° position & the Left (-30°) position. There's much more to this operation, and sometimes, depending on the machine set-up, the Turret remains in the middle (0°) position, since only ONE 'work' is done. The PLC then energizes the Indexer, and the Fixture Bar moves to the next increment. ![]() Work is done, then the Stepper Motor moves the assembly once again where work is done. After the first 'work' is done, the Stepper Motor gets a command to move the assembly to the next position. To the Fulcrum Arm is attached a Turret with mechanical / pneumatic effectors. The "NUT" of the Lead Screw is coupled to a fulcrum Arm which can swing through an arc of -30°, 0°, +30°. However, here's the mechanics: The Stepper motor (NEMA23) is connected to an ACME Lead Screw. When the steps are done, the Controller has to send back a "done" signal to the PLC, so 'work' can be done at that location of the Tooling. I need to be able to set the Controller to pulse a Bipolar Stepper Motor a certain, constant # of steps on command from a PLC. Having a serious problem with the ST-PMC1 Controller.
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