Omron SYSMAC CS Series Instruction & Reference Manual page 796

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Table of Contents

3. Instructions

• When the input condition is met, self maintenance is performed by output A and IOWR(223) is

executed with each cycle until the Equals Flag turns ON. When the writing is completed and the

Equals Flag turns ON, output B turns ON and the self maintenance is cleared.

• Be sure to place condition flags directly after IOWR(223) instructions, and not after any other

instructions. If a condition flag is placed after another instruction, it will be affected by the execution

results of that instruction.

• IOWR(223) can be used in an interrupt task, which allows high-speed processing of specific I/O data

with an interrupt. If IOWR(223) is used in an interrupt task, always disable cyclic refreshing of the

specified Special I/O Unit by turning ON the corresponding Special I/O Unit Cyclic Refreshing

Disable Bit in the PLC Setup.

• When cyclic refreshing of the specified Special I/O Unit is enabled in the PLC Setup (the

corresponding Special I/O Unit Cyclic Refreshing Disable Bit is OFF), a non-fatal Duplicate Refresh

Error will occur and the Interrupt Task Error Flag (A40213) will go ON in the following cases.

• Words allocated to the same Special I/O Unit were already refreshed by IORF(097) or

• Words allocated to the same Special I/O Unit were read or written by IORD(222) or IOWR(223).

Example Programming

In this example, IOWR(223) is used to write data.

When CIO 0.00 is turned ON, the 10 words in D100 to D109

are written to the Special I/O Unit.

Number of words

to transfer: 10

The control code (C) varies depending on the Special I/O Unit.

Special I/O Unit (Unit #3)

CS/CJ/NSJ Series Instructions Reference Manual (W474)

Unit number: 3