Omron CJ1W-DRM21 Manual de usuario descargar pdf (Pagina 173)

162

Sending Explicit Messages Section 6-4

D: First response word

C: First control data word

Command data is set in order starting with the word specified for the

CMND(490) operand S (first command word) and continuing with words with

higher addresses in I/O memory in the command block format.

Command Format Example: Writing Error Clear Codes to the CPU Unit

In the same way, response data is set from the starting with the word specified

for CMND(490) operand D (first response word) and continuing with words

with higher addresses in I/O memory in the response block format.

Note Service data that is in word (2-byte) or double-word (4-byte) units, such as

word data and ERROR CLEAR codes, is specified from low to high (U) bytes

in command block format. For example, to specify word data $1234, specify

$34 and then $12. To specify $12345678, specify $78 to $56 to $34 to $12.

The command blocks are shown in the following diagram.

Set in this order starting from the word specified for the

CMND(490) operand S (first command word) and

continuing with words with higher addresses.

Command

code

Destination

node address

Service

Code

Class ID

Instance ID

Service Data

Method for Setting Data from CMND(490) Operand S

Bit

FINS command code

Node address, Service Code

Class ID

Instance ID

Service Data

28 01 01 10 00 2F 00 00 65 FE FF

1 2 ... 168 169 170 171 172 173 174 175 176 177 178 ... 273 274

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Omron CJ1W-DRM21 Manual de usuario Pagina 173