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C200H I/O Link Units Section 6-1
Unit is mounted and the memory area. Be sure to specify bytes within the
data area range.
WORD DATA READ 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
Response Block
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 Area Word range
01 Hex IR Area 1 (CIO) Write Area: IR 000 to IR 235
Read Area: IR 000 to IR 235
02 Hex IR Area 2 (CIO) IR 300 to IR 511
03 Hex Data Memory Area (DM or D) DM 0000 to DM 4095
(C200HE-CPU11-E only)
DM 0000 to DM 5999
(All except C200HE-CPU11-E)
04 Hex LR Area LR 00 to LR 63
05 Hex HR Area (HR or H) HR 00 to HR 99
06 Hex C200HX/HG/HE
(-Z)
AR Area AR 00 to AR 27
(Can be set for Read Area only)
CS1H/G Holding Area (H) H100 or H102 to H127
(Specify the starting word with
00 Hex or 02 to 1B Hex.)
Destination node address
Service code
Class ID
Instance ID
Address L
Address H
No. of read words
No. of received bytes
Source node address
Service code
Word data H
Word data L
Word data H
Word data L
Read data
(Maximum: 200 bytes)
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