Omron DeviceNet CV Series Operation Manual page 264

C200H I/O Link Units
WORD DATA READ
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Unit is mounted and the memory area. Be sure to specify bytes within the
data area range.
WORD DATA READ will read data from any area of the CPU Unit of the PLC
to which the C200H I/O Link Unit is mounted. Data is returned from the right-
most byte to the leftmost byte.
Command Block
Service code
Destination node address
Response Block
Service code
Source node address
No. of received bytes
Parameters
Destination Node Address (Command)
The node address of the C200H I/O Link Unit reading the data, in single-byte
(2-digit) hexadecimal.
Service Code (command, response)
In the command, ID Hex is specified. In the response, the leftmost bit is
turned ON and 9D Hex is returned.
Class ID (Command)
Always 2F Hex.
Instance ID (Command)
Specifies the data area to be read, in hexadecimal as shown in the following
table.
Setting
01 Hex IR Area 1 (CIO)
02 Hex IR Area 2 (CIO)
03 Hex Data Memory Area (DM or D)
04 Hex LR Area
05 Hex HR Area (HR or H)
06 Hex C200HX/HG/HE
(-Z)
CS1H/G
Class ID
No. of read words
Address L
Address H
Instance ID
Word data H
Word data L
Read data
(Maximum: 200 bytes)
Area
Write Area: IR 000 to IR 235
Read Area: IR 000 to IR 235
IR 300 to IR 511
DM 0000 to DM 4095
(C200HE-CPU11-E only)
DM 0000 to DM 5999
(All except C200HE-CPU11-E)
LR 00 to LR 63
HR 00 to HR 99
AR Area AR 00 to AR 27
(Can be set for Read Area only)
Holding Area (H) H100 or H102 to H127
(Specify the starting word with
00 Hex or 02 to 1B Hex.)
Section 6-1
Word data H
Word data L
Word range
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