外文翻译--创建位控模块程序(编辑修改稿)

外文翻译--创建位控模块程序(编辑修改稿)内容摘要：

ts or pulses. If you select pulses, you do not have to specify any other information. If you select engineering units, you must enter the following data: the number of pulses required to produce one revolution of the motor (refer to the data sheet for your motor or drive), the base unit of measurement (such as inch, foot, millimeter, or centimeter), and the amount of motion (or “units”) provided by one revolution of the motor. STEP 7–Micro/WIN provides an EM253 Control Panel that allows you to modify the number of units per revolution after the Position module has been configured. If you change the measurement system later, you must delete the entire configuration including any instructions generated by the Position Control wizard. You must then enter your selections consistent with the new measurement system. Entering the Jog Parameters The Jog mand is used to manually move the tool to a desired location. Using the Position Control wizard, you specify the following Jog parameters values: ① JOG_SPEED: The JOG_SPEED (Jog speed for the motor) is the maximum speed that can be obtained while the JOG mand remains active. ② JOG_INCREMENT: Distance that the tool is moved by a momentary JOG mand. Entering the Acceleration and Deceleration Times As part of the configuration for the Position module, you set the acceleration and deceleration times. The default setting for both the acceleration time and the deceleration time is 1 second. Typically, motors can work with less than 1 second. You specify the following times in milliseconds: ① ACCEL_TIME: Time required for the motor to accelerate from SS_SPEED to MAX_SPEED. Default = 1000 ms ② DECEL_TIME: Time required for the motor to decelerate from MAX_SPEED to SS_SPEED. Default = 1000 ms Entering the Jerk Time Jerk pensation provides smoother position control by reducing the jerk (rate of change) in acceleration and deceleration parts of the motion profile. See Figure 99. Reducing jerk improves position tracking performance. Jerk pensation is also known as “S curve profiling.” Jerk pensation can only be applied to simple onestep profiles. This pensation is applied equally to the beginning and ending portions of both the acceleration and deceleration curve. Jerk pensation is not applied to the initial and final step between zero speed and SS_SPEED. You specify the jerk pensation by entering a time value (JERK_TIME). This is the time required for acceleration to change from zero to the maximum acceleration defined by MAX_SPEED, SS_SPEED, and ACCEL_TIME, or equivalently for DECEL_TIME. A longer jerk time yields smoother operation with a smaller increase in total cycle time than would be obtained by simply increasing the ACCEL_TIME and DECEL_TIME. A value of zero indicates that no pensation should be applied. (Default = 0 ms) Configuring the RP Seek Sequence You can configure the sequence that the Position module uses to search for the reference can select the following options for the RP search sequence: ① RP Seek mode 0: Does not perform a RP seek sequence ② RP Seek mode 1: The RP is where the RPS input goes active on the approach from the work zone side. (Default) ③ RP Seek mode 2: The RP is centered within the active region of the RPS input. ④ RP Seek mode 3: The RP is located outside the active region of the RPS input. RP_Z_CNT specifies how many ZP (Zero Pulse) input counts should be received after the RPS bees inactive. ⑤ RP Seek mode 4: The RP is generally within the active region of the RPS input. RP_Z_CNT specifies how many ZP (Zero Pulse) input counts should be received after the RPS bees active. Configuring the Motion Profiles for the Position Module A profile is a predefined motion description consisting of one or more speeds of movement that effect a movement from a starting point to an ending point. You do not have to define a profile in order to use the module. The Position Control wizard provides an instruction subroutine (POSx_GOTO) for you to use to control moves. ① Number of profiles: You can select up to a maximum of 25 profiles. ② Address for the mand byte: You must enter the output (Q) memory address of the mand byte for the Position module. ③ Address for the configuration/profile table: You must enter the starting memory address for the configuration/profile table that stores the configuration data for the Position module and the data for all of the profiles. The configuration data for the Position module requires 92 bytes of V memory, and each profile requires 34 bytes of V memory. For example, the amount of memory required for the configuration/profile table for a Position module with one profile is 126 bytes of V memory. The Position Control wizard can suggest an unused V memory block address of the correct size. Defining the Motion Profile The Position Control wizard provides a Motion Profile Definition where you define each motion profile for your application. For each profile, you select the operating mode and define the specifics of each individual step for the profile. The Position Control wizard also allows you to define a symbolic name for each profile by simply entering the symbol name as you define the profile. After you have finished configuring the profile, you can save to configuration and print a copy of the parameters. ① Selecting the Mode of Operation for the Profile You configure the profile according the the mode of operation, either an absolute position, a relative position, a singlespeed continuous rotation, or a twospeed continuous rotation. ② Creating the Steps for the Profile A step is a fixed distance that a tool moves, including the distance covered during acceleration and deceleration times. Each profile can have up to 4 individual steps. You specify the ta。