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IC-MNF 데이터시트(PDF) 99 Page - IC-Haus GmbH |
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IC-MNF 데이터시트(HTML) 99 Page - IC-Haus GmbH |
99 / 104 page preliminary preliminary iC-MNF 26-BIT NONIUS ENCODER WITH 3-CH. SAMPLING 14-BIT Sin/D INTERPOLATION Rev A2, Page 99/104 CAL_TO starts the function to get the optimal values for the track offset parameters at the current position. The calibration function ends automatically after setting the track offset parameters. searching operating point finish idle CAL_TO 0x0 0x1 0x7 SOFT_RES STAT_CAL Figure 75: Status information sequence of CAL_TO (STAT_CAL, see Table 177) It is recommended to do a check for unambiguousness over all possible positions after setting the track off- set parameters, e.g. with the integrated Monitoring: Track Offsets. Note: After a successful calibration of the track offsets, the command WRITE_CONF should be executed to save the new SPO_x (x = S,N) values to the EEPROM. Monitoring: Track Offsets The track offset monitoring is always active and mon- itors the phase margin of each nonius synchroniza- tion. The minimum and maximum values are stored in DMIN_N, DMAX_N, DMIN_S and DMAX_S. The com- mand SOFT_RES can be used to reset those values. The track offset monitoring can be used to determine the optimal values for the parameters SPO_N and SPO_S (see Fig. 74) or for quality monitoring during as- sembly. To do so, please set MODE_ST to a cyclically converted synchronization mode with always enabled output data verification to ensure an exhaustive track offset monitoring. Please change the position so that the significant traveling distance is covered by the test and return to the original position, so that this test is done for both directions. The DMIN/DMAX_X values can be used to benchmark the quality of the phase difference of the input signals. The min/max track offset values should be centered around 0. The system is expected to fail if one of the values reaches ±7.5. DMIN_N Addr. SER:0x6D; bit 3:0 DMAX_N Addr. SER:0x6D; bit 7:4 DMIN_S Addr. SER:0x6E; bit 3:0 DMAX_S Addr. SER:0x6E; bit 7:4 Code Value 0x0 -7.5 lower limit 0x1 -6.5 . . . 0x5 -2.5 0x6 -1.5 ↑ 0x7 -0.5 ideal 0x8 0.5 ideal 0x9 1.5 ↓ 0xA 2.5 . . . 0xF 7.5 upper limit Table 181: Min/Max track offset |
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