Omron CJ1W-SCU22, Руководство по эксплуатации, Страница: 75 / 478

2-1
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
2
This section describes the components of the Serial Communications Boards and the
Serial Communications Units, the settings required for operation, and the memory allo-
cated in the I/O memory of the CPU Unit to control and monitor communications.
2-1 Component Names and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-2 Data Exchange with the CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-2-1 Data Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-2-2 How to Specify and Create Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2-3 Device Variable for CJ-series Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2-3-1 Allocations of Device Variable for CJ-series Unit . . . . . . . . . . . . . . . . . . . . . . 2-14
2-3-2 Device Variable for CJ-series Unit for System Settings . . . . . . . . . . . . . . . . . 2-14
2-3-3 Device Variable for CJ-series Unit for Software Switches . . . . . . . . . . . . . . . 2-23
2-3-4 Device Variable for CJ-series Unit for Status . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
2-4 System-defined Variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
Initial Settings and Allocations of
Device Variable for CJ-series Unit