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CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
CONTENTS
Section 3 Data Exchange with the CPU Unit
3-1 Data Exchange with the CPU Unit.......................................................................................... 3-2
3-1-1 Data Flow.................................................................................................................................... 3-2
3-1-2 Accessing From the User Program............................................................................................. 3-4
3-2 Device Variables for CJ-series Unit (Software Switches, Statuses) ................................... 3-9
3-2-1 Software Switches 1 ................................................................................................................... 3-9
3-2-2 Software Switches 2 (n + 1CH) ................................................................................................ 3-18
3-2-3 Master COS Send Switches ..................................................................................................... 3-23
3-2-4 Disconnect/Connect Switches .................................................................................................. 3-24
3-2-5 Unit Status 1 ............................................................................................................................. 3-25
3-2-6 Unit Status 2 ............................................................................................................................. 3-30
3-2-7 Master Status 1......................................................................................................................... 3-33
3-2-8 Master Status 2......................................................................................................................... 3-38
3-2-9 Slave Status 1........................................................................................................................... 3-39
3-2-10 Slave Status 2........................................................................................................................... 3-45
3-2-11 Registered Slave Table ............................................................................................................. 3-46
3-2-12 Normal Slave Table................................................................................................................... 3-47
3-2-13 C200H Master Replacement Master Status 1 .......................................................................... 3-48
3-3 Device Variables for CJ-series Unit (Allocations Setting Table, Slave Detailed Status) . 3-51
3-3-1 Communications Cycle Time Setting........................................................................................ 3-51
3-3-2 Master User-set Allocations Setup Table.................................................................................. 3-53
3-3-3 Slave User-set Allocations Setup Table .................................................................................... 3-56
3-3-4 Communications Cycle Time Reference Table ......................................................................... 3-58
3-3-5 Master User-set Allocations Reference Table........................................................................... 3-58
3-3-6 Slave User-set Allocations Reference Table............................................................................. 3-60
3-3-7 Slave Detailed Status ............................................................................................................... 3-61
Section 4 Remote I/O Master Communications
4-1 Master Remote I/O Communications ..................................................................................... 4-2
4-1-1 Allocations .................................................................................................................................. 4-2
4-1-2 Remote I/O Master Specifications .............................................................................................. 4-5
4-1-3 Precautions on the Number of Master Units............................................................................... 4-6
4-1-4 Procedure for Using Remote I/O Master .................................................................................... 4-8
4-2 Scan List................................................................................................................................. 4-11
4-2-1 Scan List................................................................................................................................... 4-11
4-2-2 Scan List Enabled and Scan List Disabled ............................................................................... 4-12
4-2-3 Backing Up the Scan List.......................................................................................................... 4-13
4-3 Fixed Allocations................................................................................................................... 4-14
4-3-1 Allocated Words........................................................................................................................ 4-14
4-3-2 Allocation Procedures............................................................................................................... 4-15
4-3-3 Changing System Components................................................................................................ 4-18
4-3-4 Fixed Allocations Example........................................................................................................ 4-19
4-4 User-set Allocations .............................................................................................................. 4-20
4-4-1 Settings through CX-Integrator ................................................................................................. 4-22
4-4-2 Settings through Device Variables for CJ-series Unit
(Master User-set Allocations Setup Table) ............................................................................... 4-25
4-5 Starting and Stopping Remote I/O Communications ......................................................... 4-31
4-5-1 Starting Remote I/O Communications ...................................................................................... 4-31
4-5-2 Stopping Remote I/O Communications .................................................................................... 4-31
4-5-3 Restarting Remote I/O Communications .................................................................................. 4-31
4-6 Example of User Program for Remote I/O Communications ............................................. 4-32
4-7 Errors that May Occur in Remote I/O Communications..................................................... 4-33
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