5
14.9 Initialization........................................................................................................................................14-1 0
14.10 Communication procedure example ...............................................................................................14- 10
14.11 Command and data No. list............................................................................................................. 14-11
14.11.1 Read commands .........................................................................................................................14-11
14.11.2 Write commands ........................................................................................................................14-12
14.12 Detailed explanations of commands ...............................................................................................14-1 4
14.12.1 Data processing.......................................................................................................................... 14-14
14.12.2 Status display ............................................................................................................................ 14-16
14.12.3 Parameter................................................................................................................................... 14-17
14.12.4 External I/O pin statuses (DIO diagnosis) ..............................................................................14- 19
14.12.5 Disable/enable of external I/O sign als (DIO) ..........................................................................14-20
14.12.6 External input signal ON/OFF (test o peration) .....................................................................14-21
14.12.7 Test operation mode ..................................................................................................................14-2 2
14.12.8 Output signal pin ON/OFF output sign al (DO) forced output.............................................. 14-24
14.12.9 Alarm history .............................................................................................................................14-25
14.12.10 Current alarm.......................................................................................................................... 14-26
14.12.11 Other commands...................................................................................................................... 14-27
15. ABSOLUTE POSITION DETECTION SYSTEM 15- 1 to 15- 66
15.1 Outline.................................................................................................................................................. 15- 1
15.1.1 Features......................................................................................................................................... 15- 1
15.1.2 Restrictions.................................................................................................................................... 15- 1
15.2 Specifications ....................................................................................................................................... 15- 2
15.3 Battery installation procedure ...........................................................................................................15- 3
15.4 Standard connection diagram ............................................................................................................ 15- 4
15.5 Signal explanation............................................................................................................................... 15- 5
15.6 Startup procedure................................................................................................................................ 15- 6
15.7 Absolute position data transfer protoco l........................................................................................... 15- 7
15.7.1 Data transfer procedure ...............................................................................................................15- 7
15.7.2 Transfer method ........................................................................................................................... 15- 8
15.7.3 Home position setting.................................................................................................................. 15-17
15.7.4 Use of servo motor with electromagnetic brake .......................................................................15-19
15.7.5 How to process the absolute position d ata at detection of stroke end ....................................15-20
15.8 Examples of use ..................................................................................................................................15-21
15.8.1 MELSEC-A1S (A1SD71)............................................................................................................. 15-21
15.8.2 MELSEC FX(2N)-32MT (FX(2N)-1PG) .....................................................................................15-35
15.8.3 MELSEC A1SD75(AD75) ........................................................................................................... 15-47
15.9 Confirmation of absolute position detection data ............................................................................15-62
15.10 Absolute position data transfer error s ...........................................................................................15-63
15.10.1 Corrective actions ......................................................................................................................15- 63
15.10.2 Error resetting conditions......................................................................................................... 15-65
Appendix App- 1 to App- 4
App 1. Signal arrangement recording sheets......................................................................................... App- 1
App 2. Status display block diagram ...................................................................................................... App- 2
App 3. Combination of servo amplifier and servo motor ......................................................................App- 3