The invention discloses a
programming control system of a pattern
sewing machine based on a PLC (
Programmable Logic Controller). The
programming control system comprises a control box, a control box circuit board, PLC hardware, drivers for a main axis, an X axis and a Y axis, man-
machine interface hardware, motors of the main axis, the X axis and the Y axis, a handpiece circuit board, a tangent line
electromagnet, a line pulling
electromagnet, a line loosening
electromagnet, a medium-pressure electromagnet, an external-pressure electromagnet, an X-axis zero point switch, a Y-axis zero point switch, an
emergency stop switch and a pedal switch, wherein the control box circuit board is arranged in the control box; the PLC hardware and the drivers for the main axis, the X axis and the Y axis are arranged in the control box and connected with the control box circuit board; the man-
machine interface hardware is connected with the PLC hardware; the motors of the main axis, the X axis and theY axis are arranged on a
sewing machine and correspondingly connected with the drivers for the main axis, the X axis and the Y axis; the handpiece circuit board is arranged on the
sewing machine and connected with the control box circuit board; the tangent line electromagnet, the line pulling electromagnet, the line loosening electromagnet, the medium-pressure electromagnet and the external-pressure electromagnet are connected with the handpiece circuit board; the X axis zero point switch and the Y axis zero point switch are connected with the handpiece circuit board; the
emergency stop switch is connected with the handpiece circuit board; and the pedal switch is connected with the PLC hardware. A
system framework based on the PLC is innovatively used with an innovative concept, and a driving motor and the like are standard members, so that the
system has high generality, reliability,
usability and low price, is easy to purchase, and can be expanded and upgraded conveniently.