Data Exchange With The Cpu Unit - Omron CJ Series Operation Manual

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Data Exchange with the CPU Unit

CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
This section describes the words allocated to the PROFIBUS Unit in the CIO Area and
DM Area. These words both enable controlling the PROFIBUS Unit and accessing Unit
and network status.
4-1 Data Exchange with the CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-1-1
Data Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-1-2
Accessing From the User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4-2-1
Software Switches (*_SwCmd) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4-2-2
Global-Control Command (*_GlobCtlCmd) . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11
4-2-3
Unit Status (*_UnitSta) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4-2-4
Master Status (*_MstrSta) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
4-2-5
Master Errors (*_MstrErrSta) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
4-2-6
Slave Status (*_SlvSta) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
4-2-7
Actual Bus Cycle Time (*_ActCycleTm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
4-2-8
Slave Data Exchange Active Flags (*_SlvDatXchg, *_SlvDatXchgL,
*_SlvDatXchgH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
4-2-9
Slave New Diagnostics Flags (*_SlvNewDiagL, *_SlvNewDiagH, *_SlvNewDiag)
4-24
4
4-1

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