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Chapter 8 EXPLICIT MESSAGE
8.1 Overview
Explicit Message is a communication process that accesses DeviceNet variables at arbitrary (event-driven)
timing. Using this option is capable of accessing not only standard DeviceNet variables but also all inverter's
function codes. Explicit Message lacks realtime performance, but it allows many variables to be set or referred
to. It is, therefore, suited for initial setting.
Refer to the user's manual of the connected master for Explicit Message.
- Variables usable in Explicit Message are grouped using three codes--Class (major key), Instance
(medium key) and Attribute (minor key). These three codes should be used for specifying a variable.
- A group of all variables contained in Class is called "Object."
8.2 Objects to be Used in Explicit Message
This section describes objects relating to this option and the inverter. Other objects that are automatically
executed by the master device are excluded in this manual.
(1) Identity object (Class 01 hex.)
This object refers to the product information of this option. It is a group of read-only variables.
Instance Attribute Name Description Value (hex.) R/W Data size
0 01 Revision Revision number of Identity
object
0001 R Word
1 01 Vender ID Manufacturer's ID code 013F (=319):
Fuji Electric
R Word
02 Device Type Applied device profile 0002: AC drive R Word
03 Product Code ID code of this option 2402 R Word
04 Revision Software version
(Major and minor versions)
Display of version
Example: 01, 0A
(=Ver. 1.10)
R Byte,
Byte
05 Status Status of this option Depends on DeviceNet
specifications.
R Word
06 Serial Number Serial number of the product Differs with the product. R DWord
07 Product Name Model name
OPC-E1-DEV R 11 bytes
(2) Motor Data object (Class 28 hex.)
This object refers to and sets up the motor rated current and voltage. When Motor 2 is selected, this object
automatically switches to the one for Motor 2.
Instance Attribute Name Description Value (hex.) R/W Data size
0 01 Revision Revision number of Motor
Data object
0001 R Word
1 03 Motor Type Type of motor connected 07: Squirrel-cage,
induction motor
R Byte
06 Rated
Current
Rated current in units of 0.1 A Depends on the
inverter setting.
R/W Word
07 Rated
Voltage
Rated voltage in units of 1 V
(base voltage)
Depends on the
inverter setting.
R/W Word
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