Allen-Bradley SmartGuard 600 User Manual

207 Publication 1752-UM001A-EN-P - October 2006
Appendix D
Explicit Messages
Introduction
Receiving Explicit
Messages
Sending an explicit message from a standard DeviceNet master to the
SmartGuard controller enables reading or writing any specified data or
parameters of the SmartGuard controller. The controller performs
according to a command sent from the master and returns a response.
A read command reads the SmartGuard local I/O or safety slave I/O
area allocated to the SmartGuard controller from the master.
The basic format of the command and response are shown below.
Command Format
Normal Response Format
Error Response Format
Command Format
The Destination Node Address specifies, in 1 byte hexidecimal, the
node address of the data to be read.
Topic Page
Receiving Explicit Messages 207
Sending Explicit Messages 210
Access Controller Parameters Using DeviceNet Explicit
Messages
212
Destination
Node
Address
Service Code Class ID
Instance
ID
Offset
Address
Data
Size
4B 03 56
Number of Receive
Bytes
Originating Node
Address
Service
Code
Read Data
CB
Number of Receive
Bytes
Originating Node
Address
Service
Code
Error Code
00 04 94

Allen-Bradley SmartGuard 600 Specifications

General

Brand	Allen-Bradley
Model	SmartGuard 600
Category	Controller
Language	English