Yaskawa DeviceNet Option Card CM059 - Manual (Page 34)

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DeviceNet Polled I/O Messaging Communications
DeviceNet Communications between a Master (PLC or PC) and the drive (Slave) uses Polled I/O messaging, based from the
following I/O Assemblies, to transfer control and diagnostic information to and from the drive. The “Input Data Assemblies”
or “Polled Consuming Assemblies (PCA)” refer to a message sent from the Master to the drive. The “Output Data
Assemblies” or “Polled Producing Assemblies (PPA)” refer to the response from the drive back to the Master. The factory
default of the drive DeviceNet is Extended Speed Control Input Instance 21 and Extended Speed Control Output Instance 71.
The configuration software uses the EDS file to change the PCA and PPA. By accessing the EDS file through configuration
software, the PCA and PPA can be accessed under the DeviceNet Parameter Groups “Polled Consuming Assembly” and
“Polled Producing Assembly”. Set the appropriate value using the table below and save the changes to the device.
Be sure to power down the drive, then power up to store the changes made to the PCA and PPA.
The tables in the following pages indicate the format and structure of the I/O Assemblies.
Note: 1. Regardless if I/O Data Exchange is enabled or disabled, communications will occur at the determined intervals
set by the Master.
2. Input Data Assemblies = Polled Consuming Assemblies
Output Data Assemblies = Polled Producing Assemblies
Table 12: Supported Service
Service Code
(Hex)
Service Name Description of Service
0E Get_Attribute_Single Designated attribute content is read.
10 Set_Attribute_Single Designated attribute content is changed.
Class Instance Attribute Type Data Description
101
(65 Hex)
1
1
PPA
(Output Data
Assembly)
70
(46 Hex)
Basic Speed Control Output Instance 70
71
(47 Hex)
Extended Speed Control Output Instance 71
*default
150
(96 Hex)
Drive Modbus I/O Control Output Instance 150
151
(97 Hex)
Drive Standard Drive Control Output Instance 151
2
PCA
(Input Data
Assembly)
20
(14 Hex)
Basic Speed Control Input Instance 20
21
(15 Hex)
Extended Speed Control Input Instance 21
*default
100
(64 Hex)
Drive Modbus I/O Control Input Instance 100
101
(65 Hex)
Drive Standard Drive Control Input Instance 101