4-12 Data Registers - Omron CP1L Operation Manual

Data Registers
Task 1
Task 2
Peripheral servicing

4-12 Data Registers

168
Note Be sure to use PLC memory addresses in Index Registers.
D1001 and D1000
stored in IR0
or
Actual memory address of
CIO 0 (0000C000 hex)
stored in IR0
Contents of IR0 stored in
D01001 and D01000
D02001 and D02000
stored in IR0
or
Actual memory address
CIO 5 (0000C005 hex)
stored in IR0
Contents of IR0 stored in
D02001 and D02000
The sixteen Data Registers (DR0 to DR15) are used to offset the PLC mem-
ory addresses in Index Registers when addressing words indirectly.
The value in a Data Register can be added to the PLC memory address in an
Index Register to specify the absolute memory address of a bit or word in I/O
memory. Data Registers contain signed binary data, so the content of an
Index Register can be offset to a lower or higher address.
IR storage words for task 1
or
IR storage words for task 2
or
Read D01001 Read D02001
and D01000 and D02000
Section 4-12