
B-63404EN/03 OPERATION 1.DeviceNet FUNCTIONS
- 55 -
Assigning DI/DO addresses
Set to parameters the addresses and sizes of the R areas to which
DI/DO areas are to be assigned. For example, to assign six bytes of DI
data (data input to the CNC from the master) to R1000 onwards and
assign two bytes of DO data (data output from the CNC to the master)
to R1100 onwards, set each of the data items as follows in screen
1.3(a) or 1.3(c).
4 DI ADDRESS = R1000
5 DI SIZE = 6
6 DO ADDRESS = R1100
7 DO SIZE = 2
DI/DO is assigned to R area signals as follows according to this
setting.
DI Assignments
R1000 1st DI data from master
R1001 2nd DI data from master
R1002 3rd DI data from master
R1003 4th DI data from master
R1004 5th DI data from master
R1005 6th DI data from master
DO Assignments
R1100 1st DO data to master
R1101 2nd DO data to master
When a DI only slave or a DO only slave is connected, set the value
of the parameter that specifies the size of the unused DO or DI to "0".
Assign DI/DO in the same way on the master device, too. For details
on how to set parameters on the master device, refer to the
Specifications Manual for the master device to be used.
NOTE
When you set the assignment data, carefully set the
data so that area to be secured as each assigned
data item are not duplicated. Also, thoroughly check
before setting to prevent areas that are currently
used for other slave assignment addresses and PMC
ladder programs from being duplicated.