IDEC High Performance Series - Manual (Page 15)

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Contents
External Device Setup Manual
6.1 Conditions .........................................................................................................................557
Chapter 4 DM Link Communication
1 Outline ...............................................................................................560
1.1 Outline ..............................................................................................................................560
1.2 DM Link Communication ................................................................................................560
2 System Configuration ........................................................................561
2.1 DM Link 1:1 Communication ..........................................................................................561
2.2 DM Link 1:N Communication .........................................................................................561
3 Wiring .................................................................................................562
3.1 RS232C .............................................................................................................................562
3.2 RS422/485 ........................................................................................................................566
4 Communication Specifications ...........................................................573
4.1 Communication Method ...................................................................................................573
4.2 Communication Conditions ..............................................................................................573
4.3 Flow control ......................................................................................................................573
5 Data Memory (DM) Allocation ............................................................575
5.1 System Area .....................................................................................................................575
5.2 D0 to D11 Event Transmission (DM14) ..........................................................................575
5.3 Event Area Setting (DM15) ..............................................................................................575
5.4 User Area (DM16 to DM8191) ........................................................................................575
6 DM Link Communication Settings ......................................................576
7 DM Link 1:1Communication Format ..................................................577
7.1 Read ..................................................................................................................................577
7.2 Write .................................................................................................................................580
7.3 Transmission Control .......................................................................................................583
7.4 Clear Command ................................................................................................................585
7.5 Event Transmission ..........................................................................................................586
8 DM Link 1:N Communication Format .................................................588
8.1 Read ..................................................................................................................................588
8.2 Write .................................................................................................................................591
8.3 Clear ..................................................................................................................................594
8.4 Station Number .................................................................................................................594
9 BCC Calculation ................................................................................595
9.1 BCC Calculation Example (for DM Link 1:N Communication) .....................................595
10 Error Codes .......................................................................................596
10.1 Response Time .................................................................................................................596