Omron CS1W-DRM21, Operation Manual

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C200H I/O Link Units Section 6-1
7. Click the Re s et button to enable the edited parameters.
A reset confirmation message will be displayed. Click the Ye s button to
confirm. When the C200H I/O Link Unit is reset, the corresponding Special
I/O Unit Restart Bit in AR 01 of the PLC will be turned ON.
If the Read/Write Area sizes have been changed, you must correct the
Master’s I/O allocation settings.
Note Once the Read/Write Area has been set, data will be automatically transferred
and received when the Master and Slaves are restarted.
6-1-8 Explicit DeviceNet Messages
Explicit DeviceNet messages (commands) can be sent from the Master to
write data to any area of the CPU Unit of the PLC to which the C200H I/O Link
Unit is mounted.
This section the explicit messages supported by the C200H I/O Link Unit, and
provides usage examples. For further details on using explicit messages on
the Master Unit, refer to the Master Unit’s Operation Manual.
C200H I/O Link Unit Explicit Message List
Use BYTE DATA READ and BYTE DATA WRITE when sending explicit mes-
sages (commands) from an OMRON DeviceNet Master. When using other
manufacturer’s DeviceNet Masters to send explicit messages (commands),
use WORD DATA READ and WORD DATA WRITE.
The number of bytes specified for Class ID and Instance ID differ according to
the type of Master used. For an OMRON DeviceNet Master, 2 bytes (4 digits)
are specified. For an example of this, see
6-1-9 Using Explicit DeviceNet Mes-
sages
.
BYTE DATA READ BYTE DATA READ will read data from any area of CPU Unit of the PLC to
which the C200H I/O Link Unit is mounted. Data is returned from the leftmost
bit to the rightmost bit.
Explicit message Function Page
BYTE DATA READ Reads the specified node’s data in bytes.
Word data is read from the leftmost bit to
the rightmost bit.
The maximum data size for read data is 200
bytes.
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BYTE DATA WRITE Writes the specified node’s data in byte.
Word data is written from the leftmost bit to
the rightmost bit.
The maximum data size for write data is 200
bytes.
245
WORD DATA READ Reads the specified node’s data in words.
Word data is read from the rightmost bit to
the leftmost bit.
The maximum data size for read data is 100
words.
247
WORD DATA WRITE Writes the specified node’s data in words.
Word data is written from the rightmost bit
to the leftmost bit.
The maximum data size for write data is 100
words.
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Error response When an error occurs in an explicit mes-
sage (command), an error response is sent
returned by the C200H I/O Link Unit. 250
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