Mitsubishi Electric MR-JE-C Series, Инструкция по эксплуатации

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7. OBJECT DICTIONARY
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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 CCIEF Basic SLMP Modbus/TCP Modbus RTU
Object Object Object Register Register
Index Index Index Address Address
Sub Index Sub Index Sub Index Element (Sub-address)
(Note)
Element (Sub-address)
(Note)
Variable mapping Variable mapping Variable mapping
No. of Points No. of Points No. of Points
No. of Registers No. of Registers No. of Registers
Continuous read/
continuous write
Continuous read/
continuous write
Continuous read/
continuous write
Master station Master station Master station Client Master
Slave Slave Slave Server 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.