User Manual

DeviceNet Information A-7
Publication 198-UM001B-EN-P September 2001
The following services are implemented for the DeviceNet Object:
Assembly Object — Class ID (04hex)
The Modular-DSA I/O System can send and receive data in a variety of formats. Some
formats are made to facilitate off-line programming, while others minimize the amount of
data transmitted back to the host. Each type of data formatting, or assembly, is referred to as
an instance. Assemblies are referenced from the master’s (usually a PLC) perspective. The
Output Assembly is data sent by a master and received by the Modular-DSA I/O System
modules. An Input Assembly is the data sent by a Modular-DSA I/O System device and
received by a master. The following is a list of all of the different assemblies. An explanation
for each follows the tables.
Table A.7 DeviceNet Object Common Services
Service Code Implemented for: Service Name
Class Instance
0x0E Yes Yes Get_Attribute_Single
0x10 No Yes Set_Attribute_Single
0x4B No Yes Allocate_Master/Slave_Connection_Set
0x4C No Yes Release_Master/Slave_Connection_Set
Table A.8 Output Assemblies
Assembly No. Assembly
Size
Comment
100 Variable Available for 198-DN/DNG (series A and B)
102 Variable One byte per module output data (available for series B 198-DN/DNG)
104 6 bytes Default for series B 198-DNG (available for series B 198-DNG only)
106 16 bytes Default for series B 198-DN (available for series B 198-DN only)
Table A.9 Input Assemblies
Assembly No. Assembly
Size
Comment
101 Variable
Compressed Assemblies (available for 198-DN/DNG — series A and B)
103 Variable
One byte per module input data (available for series B 198-DN/DNG)
105 8 bytes Default for series B 198-DNG (available for series B 198-DNG only)
107 20 bytes Default for series B 198-DN (available for series B 198-DN only)