Omron CS1W-MC221 -, Operation Manual

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225
Overall Structure Section 5-1
Note 1. With the CS1W-MC221, there are no addresses for task 3, task 4, the Z
axis, or the U axis. For the purposes of this illustration, CS1W-MC421 ad-
dresses are shown. For details, refer to
Section 3 MC Unit Internal Data
Configuration .
2. Words data transfer are required when IORD or IOWR is used for transfer-
ring data between the CPU Unit and the MC Unit.
3. The override function selection (6120) can be used only with Unit Ver. 1.15
or later, and with Units whose model number ends in -V1.
4. Position data, system parameters, and G-language programs are saved to
and read from flash memory. Monitor information and special information
are not.
5. When positioning by means of a G-language program, the positioning co-
ordinates can be set directly or they can be set indirectly using position
data (A0000 to A1999).
The following words and PLC Interface Area are used by the MC Unit.
Name Details Reference
PLC Interface Area When the MC Unit number is set, words are allocated
in the CPU Unit’s Special I/O Unit relay area. This area
is used to output operation commands to the MC Unit
and to receive inputs on the operational status of the
MC Unit. pages 224
and 225
Data transfer words The words designated in the INTELLIGENT I/O
WRITE (IOWR) or INTELLIGENT I/O READ (IORD)
instruction.
When data is transferred between the CPU Unit and
the MC Unit, only an area corresponding to the amount
of data transferred is used.
All data is allocated an address in the MC Unit. Data
transfer to and from the data transfer words is
performed by specifying a destination address for data
writing and specifying an source address for data
reading. When a data movement instruction, such as
INTELLIGENT I/O WRITE (IOWR) or INTELLIGENT
I/O READ (IORD), is executed, data is transferred
between these words and the MC Unit’s internal
memory.
Section 4
The first word allocated as the PLC Interface area is specified as “n” and can be calculated as follows:
n: CIO 2000 + 10
×
unit number
The CS1W-MC421 is allocated 50 words and the CS1W-MC221 is allocated 30 words.
S: The first word from which or to which data is transferred for an IOWR or IORD instruction.