Mapping Of The Application Objects Onto Plc Memory Locations - Omron C200HW-CORT21-V1 Operation Manual

I/O Data mapping

4-2-3 Mapping of the Application Objects onto PLC memory locations

Default mapping
Additional mapping
Unit settings
Default mode
Setting values in BCD
The application objects at index 2000h and 2100h (Default_Input_Bytes,
Default_Output_Bytes) are mapped to the status and control area of the
C200HW-CORT21-V1 (see section 4-3). Their data content is transferred
between the PLC and the Unit in each I/O refresh.
If additional objects are required, the Unit settings of the C200HW-CORT21-
V1 need to be configured. It is possible to map the additional application
objects to the DM, LR, IR and HR areas of the PLC memory. The input and
output application objects can be mapped independently up to a maximum of
100 input words and 100 output words.
The mapping to PLC memory locations depends on the Unit settings made in
a dedicated DM area. The assigned DM area depends on the Machine
number setting:
MACHINE No.
0
DM1000 to DM1019
1
DM1100 to DM1119
2
DM1200 to DM1219
3
DM1300 to DM1319
4 DM1400 to DM1419
5 DM1500 to DM1519
6 DM1600 to DM1619
7
DM1700 to DM1719
8
DM1800 to DM1819
9
DM1900 to DM1919
A
DM2000 to DM2019
B DM2100 to DM2119
C DM2200 to DM2219
D DM2300 to DM2319
E
DM2400 to DM2419
F
DM2500 to DM2519
* Alternatively starting at DM7000 to DM8500, selected by PLC setup of C200H:
DM6602 ≠ 0000 (see Operation Manual of CPU Unit).
* For CS1 allocations, see Appendix C.
The first word in the DM area allocated to the Unit will be indicated by DM m,
the last word by DM m+19.
DM m ~ DM m+15 are used to configure the mapping of the application
objects onto PLC memory locations.
DM m+16 ~ DM m+19 are for setting the baud rate (see appendix D).
The values entered in the Unit settings area are only transferred to the Unit
during initialisation, i.e. at power on and at Special I/O Unit restart.
The Unit is said to operate in Default Mode when the values of all Unit settings
are zero. In Default Mode, only the application objects of the predefined
connection set are exchanged with the PLC via the control and status area
(see section 4-3).
The following table lists the DM words for configuration of the I/O data
mapping, with the possible values and their meaning.
Except for the definition of the start address in the PLC CPU, all values are in
BCD. To distinguish between start addresses in different PLC memory areas,
the first digit of the 'start address' indicates the PLC memory area, and the
following three digits indicate the address in the area in BCD format.
DM area*
All C200H PLC models
All C200H PLC models except:
C200HE,
C200HG-CPU3 -E/CPU4 -E,
C200HX-CPU3 -E/CPU4 -E
Section 4-2
53