Omron CJ Series Operation Manual page 130

4 Data Exchange with the CPU Unit
An I/O port is automatically created by preparing the Unit Configuration with Sysmac Studio.
For details on the I/O ports defined for PROFIBUS Master Unit, refer to 4-2 Device Variables for CJ-
series Unit (Software Switches, Statuses).
 Software Switches / Status data
Software switches (execution instructions of each function from the CPU Unit to the PROFIBUS
Master Unit), PROFIBUS Master Unit statuses and error data are allocated.
They are allocated in the memory used for CJ-series Unit according to the unit number as shown
below.
Unit number
0
1
2
3
4
5
6
7
 Other Allocation (Reserved)
The DM area words shown below which are allocated for the PROFIBUS Master Unit are not used,
i.e. no data is exchanged between an allocated DM area and the Unit. However, the allocated area
is reserved for use in a future extension of the Unit. Therefore, using this area for user data is not
recommended.
Unit number
0
1
2
3
4
5
6
7
User-defined Variable
These variables are defined by the user and can be used to exchange data with PROFIBUS slave
devices from a user program. User-defined Variables are specified to access user-allocated areas des-
ignated with CX-ConfiguratorFDT for slave devices.
To use this area from the user program, you need to create user-defined variables of AT specification.
4-4
Allocated words Unit number
1500 to 1524 8
1525 to 1549 9
1550 to 1574 10
1575 to 1599 11
1600 to 1624 12
1625 to 1649 13
1650 to 1674 14
1675 to 1699 15
Allocated words Unit number
D30000 to D30099 8
D30100 to D30199 9
D30200 to D30299 10
D30300 to D30399 11
D30400 to D30499 12
D30500 to D30599 13
D30600 to D30699 14
D30700 to D30799 15
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
Allocated words
1700 to 1724
1725 to 1749
1750 to 1774
1775 to 1799
1800 to 1824
1825 to 1849
1850 to 1874
1875 to 1899
Allocated words
D30800 to D30899
D30900 to D30999
D31000 to D31099
D31100 to D31199
D31200 to D31299
D31300 to D31399
D31400 to D31499
D31500 to D31599