Object Dictionary; Term Replacement By Communication Protocol; Saving Object Dictionary Data To Eep-Rom - Mitsubishi Electric MR-JE-C Series Instruction Manual

7. OBJECT DICTIONARY

7. OBJECT DICTIONARY
Each data such as control parameters, command values, and feedback values is handled as an object
composed of an Index value, object name, data type, access rule, and other elements. The object data can
be exchanged between the master station (controller) and the slave stations (servo amplifiers). The
aggregate of these objects is called object dictionary.

7.1 Term replacement by communication protocol

Depending on the communication protocol to be used, select the appropriate wording in the following table.
Crossed cells in the table are not used in the target communication protocol.
Term
Object Object
Index Index
Sub Index Sub Index
Variable mapping Variable mapping
No. of Points
No. of Registers
Continuous read/
continuous write
Master station Master station
Slave Slave
Note. In Modbus protocol, Sub Index cannot be used if function code is 03h, 08h, or 10h. Modbus register with multiple Sub Index (4
bytes or multiple elements) requires consolidated read/consolidated write of all elements.

7.2 Saving object dictionary data to EEP-ROM

In the object dictionary data, there are data saved in the EEP-ROM and data that are not saved in the EEP-
ROM. For details of each object, refer to section 7.3 in the "EEP-ROM" column.
CCIEF Basic
Object
Index
Sub Index
Variable mapping
Master station
Slave
SLMP Modbus/TCP
Register
Address
Element (Sub-address)
(Note)
No. of Points
No. of Registers
Continuous read/
continuous write
Client
Server
7 - 1
Modbus RTU
Register
Address
Element (Sub-address)
(Note)
No. of Points
No. of Registers
Continuous read/
continuous write
Master
Slave