Abstract: The present disclosure provides a method for controlling driving of a motor by a Programmable Logic Controller (PLC). In one embodiment, the method includes: upon an initiation of an N-th position determination control period, stopping a scan program being executed; receiving one or more motor driving commands for one or more axes during a preset position control processing region; calculating one or more axis-based motor movement amounts corresponding to the one or more motor driving commands for the one or more axes during a preset position control calculation region; resuming execution of the scan program; and upon an initiation of a (N+1)-th position determination control period, driving the motor based on the one or more axis-based motor movement amounts calculated during the position control calculation region.

Abstract: Disclosed embodiments include methods of controlling an encoder principle axis speed synchronization for controlling a motor, which may be executed by a microprocessor. In some embodiments, the microprocessor includes latching a count value to a specific memory at an input time of an encoder pulse signal when a control period is commenced and the encoder pulse signal is received, generating an output pulse using the count value latched to the specific memory, and mapping the output pulse to an output during a next control period. In some embodiments, an interval between encoder pulse signals is calculated using a count value at an input time of the encoder pulse signal and an encoder input speed is measured according to the interval therebetween so that an encoder speed may be exactly measured.

Abstract: The present disclosure provides a method for controlling driving of a motor by a Programmable Logic Controller (PLC). In one embodiment, the method includes: upon an initiation of an N-th position determination control period, stopping a scan program being executed; receiving one or more motor driving commands for one or more axes during a preset position control processing region; calculating one or more axis-based motor movement amounts corresponding to the one or more motor driving commands for the one or more axes during a preset position control calculation region; resuming execution of the scan program; and upon an initiation of a (N+1)-th position determination control period, driving the motor based on the one or more axis-based motor movement amounts calculated during the position control calculation region.

Abstract: Disclosed embodiments relate to a method of independent control period allocation of axes in a PLC positioning system. In some embodiments, the method includes: dividing the axes into a first axis group including a first control period and a second axis group including a second control period and allocating different control periods for different axes; when position control calculation of the first axis group is requested during position control calculation of the second axis group, performing the position control calculation of the first axis group through task switching by an interrupt; and, after completing the position control calculation of the first axis group, resuming the position control calculation of the second axis group through task switching by an interrupt.

Abstract: Disclosed embodiments relate to a method of independent control period allocation of axes in a PLC positioning system. In some embodiments, the method includes: dividing the axes into a first axis group including a first control period and a second axis group including a second control period and allocating different control periods for different axes; when position control calculation of the first axis group is requested during position control calculation of the second axis group, performing the position control calculation of the first axis group through task switching by an interrupt; and, after completing the position control calculation of the first axis group, resuming the position control calculation of the second axis group through task switching by an interrupt.

Abstract: Disclosed embodiments include methods of controlling an encoder principle axis speed synchronization for controlling a motor, which may be executed by a microprocessor. In some embodiments, the microprocessor includes latching a count value to a specific memory at an input time of an encoder pulse signal when a control period is commenced and the encoder pulse signal is received, generating an output pulse using the count value latched to the specific memory, and mapping the output pulse to an output during a next control period. In some embodiments, an interval between encoder pulse signals is calculated using a count value at an input time of the encoder pulse signal and an encoder input speed is measured according to the interval therebetween so that an encoder speed may be exactly measured.

Abstract: An input circuit in high speed counter module for PLC is provided, the input circuit being configured such that various types of pulse signals are changed to a single type of pulse signal and transmitted to an MPU, whereby the type of input pulse is checked or an operation of checking addition/deduction is omitted to increase an interrupt process speed.