| ASCII - Command | PGEARI | |||
| Syntax Transmit | PGEARI [Data] | |||
| Syntax Receive | PGEARI <Data> | Available in | ||
| Type | Variable rw | MMI | Yes | |
| ASCII Format | Integer32 | CANBus Object Number | 35CA (hex) | |
| DIM | µm | PROFIBUS PNU | 1802 (dec) IND = 1 (dec) | |
| Range | 1 ... 2147483647 | DPR | 202 (dec) | |
| Default | 10000 | |||
| Opmode | All | Data Type Bus/DPR | Integer32 | |
| Drive State | - | Weighting | ||
| Start Firmware | 1.0 | |||
| Configuration | No | Last Change of this Object | 2.13 | |
| Function Group | position loop | EEPROM | Yes | |
| Short Description | Position Resolution (Numerator) | |||
Description
| Description: The pararameter PGEARI is used in conjunction with the PGEARO parameter to convert the internal position and speed from increments into user-defined units. The PGEARI parameter contains the number of user-defined units that are counted at PGEARO turns. The user decides which unit is used by the formula PGEARI/PGEARO. Note: If PGEARI = PGEARO * 2^PRBASE, then there will be no conversion from user-defined units into increments. In this case, the position and velocity must be given in increments. 1. Example: If a band-conveyer moves 3cm by one turn of the rotor shaft and the operator wants to use the unit mm, the value of PGEARI/PGEARO must be 30000. It is advisable to set PGEARI=30000 and PGEARO=1. The position can now be adjusted in mm. If a gearing is connected previous to the band-conveyer with a ratio of 3:1, the user just needs to set PGEARO=3. Also odd-numbered values of the ratio are possible (e.g. 2.5:1). For that purpose PGEARI must be multiplicated with 2 and PGEARO with 5. 2. Example A motion task should be driven by a certain speed. Therefore Bit 13 of the motion task controllword o_c has to be set on 1. For that purpose the parameter o_v describes the target speed in the user-defined unit/sec. To get the target speed in SI-units use the following formula: o_v=10000; PGEARI=1000, PGEARO=1 n [rev*sec^-1] = o_v / ( PGEARI / PGEARO ) Examples to explain the Resolution = PGEARI / PGEARO : Linearmotor >>> 1 Turntable >>> 2 Turntable extern driven >>> 3 Spindel >>> 4 Beltdrive >>> 5 |