Omron DeviceNet CV Series Operation Manual page 288

RS-232C Units
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: CustomerService@valin.com
Service Code, Class ID, Instance ID, Attribute ID
The parameters for specifying command, processing object, and processing
content. For the RS-232C Unit, however, Class ID is always 94 Hex. Attribute
ID is not necessary for some commands. If the specified codes and ID area
are outside the permitted range, an error response will be returned (08FF
Hex), and the command will not be executed.
Data
Data set when necessary. A maximum of 151 bytes can be set. Some com-
mands do not require this data.
Response Block
• The normal response block is shown below.
No. of received
bytes
• The error response block is shown below. This response block is returned
when an error occurs for an explicit message.
No. of received
bytes
• If an explicit message fails (timeout etc.), an explicit message response
will not be returned. When the command has been sent using the FINS
command EXPLICIT MESSAGE SEND, only an FINS error response is
returned.
No. of Received Bytes
The number of bytes received from the source node address is returned in
hexadecimal. When an error response is returned for an explicit message, the
number of bytes is 0004 Hex.
Source Node Address
The node address of the node from which the command was sent is returned
in hexadecimal.
Service Code
For normal completion, the value when leftmost bit of the service code speci-
fied by the command is ON is stored as shown in the table below.
Command service code
10 Hex
0E Hex
05 Hex
When an error response is returned for an explicit message, the value is
94 Hex.
1,024 bytes max.
Service
Data
code
Source node address
Error code
Service code
(94 Hex: Fixed)
Source node address
Response service code
90 Hex
8E Hex
85 Hex
Section 6-2
271