Omron CS1W-MC221 -, Operation Manual

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IOWR and IORD Specifications Section 4-2
Example 2 Reading the X-axis Acceleration Time (500 [ms]) to D00100 to D00101.
Data that Is Read [DM]
Execution Timing for IORD
Refer to the following diagram for the execution timing and processing method
of the IORD instruction.
1,2,3... 1. The CPU Unit performs a format check to see if the designations for the
IOWR instruction operands are correct. The Error Flag will be turned ON
and the IOWR instruction will not be executed if a designation is incorrect.
2. The MC Unit performs a data check to see if the MC Unit can process the
data designated with the operands. The Equals Flag will be turned ON if
the MC Unit can process the data. The Equals Flag will not be turned ON
and the IOWR instruction will not be executed if the MC Unit cannot pro-
cess the data.
3. The specified data is transferred from the MC Unit to the CPU Unit. The
Equals Flag will turn ON when the transfer has been completed.
Transfer Time Refer to Section 1-5 Specifications.
DIFU(13) R1
Work bit
IORD
#1136
#00020000
D00100
R3
R2
R3 R1
R2
(=)
Execution condition
OUT (Work bit)
Set the X-axis acceleration time address to 4406.
(1136 Hex corresponds to 4406)
Set the source unit number (0) and a total of two
words to be transmitted.
Set the address first word of the destination to
store the acceleration time data.
OUT (Work bit)
D0100
D0101
01F4
0000
500 ms.
Data processing
(3)
Within one cycle
Set
Transfer data
IORD instruction
Format
check
(1)
Data
check
(2)