DRT2-OD08 Omron, DRT2-OD08 Datasheet - Page 490
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DRT2-OD08
Manufacturer Part Number
DRT2-OD08
Description
DRT2 8 Out TermOutal NPN
Manufacturer
Omron
Datasheet
1.DRT2-OD16.pdf
(600 pages)
Specifications of DRT2-OD08
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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DeviceNet explicit messages sent from the Master Unit to a DRT2-series Smart Slave can be used to read or
write any parameter of a specified Smart Slave.
The Smart Slaves process the commands sent from the Master and then return responses.
Basic Format of Explicit Messages
The basic format of each command and response is shown below.
Command Block
Destination Node Address
The node address of the Unit that is sending the explicit messages (commands) is specified as a single-byte
hexadecimal.
Service Code, Class ID, Instance ID, Attribute ID
The parameters used for specifying the command, processing object, and processing content.
Note The number of bytes designated for Class ID, Instance ID, and Attribute ID depend on the Master Unit.
Data
Data is not required when the read command is used.
Response Block
Normal Response Block
Error Response Block
Number of Bytes Received
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 always 0004 Hex.
Source Node Address
The node address of the node from which the command was sent is returned in hexadecimal.
Destination
node address
Number of bytes
received
Number of bytes
received:
0004 Hex (fixed)
When sent from an OMRON DeviceNet Master, the Class ID and Instance ID are 2 bytes (4 digits), and
Attribute ID is 1 byte (2 digits).
Service
code
Source node
address
Source node
address
Class
ID
DeviceNet Explicit Messages
Service code
Service code
Appendix A
Instance
ID
Data
Attribute
ID
Error code
Data
469
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