Chapter 1 Summary Of Object Dictionary; Structure - Mitsubishi Electric MR-J5-G-N1 User Manual

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SUMMARY OF 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 (external device) and the slave stations (servo amplifiers). The aggregate of these objects is called an object
dictionary.
This manual describes the object dictionary which is necessary for servo amplifiers to be used via EtherCAT communication.
1.1

Structure

The following shows the detailed structure of the object dictionary.
Item Explanation
Data Type Indicates the object size.
I8: 8-bit signed integer (range: -128 (80h) to 127 (7Fh))
I16: 16-bit signed integer (range: -32768 (8000h) to 32767 (7FFFh))
I32: 32-bit signed integer (range: -2147483648 (80000000h) to 2147483647 (7FFFFFFFh))
U8: 8-bit unsigned integer (range: 0 (0h) to 255 (FFh))
U16: 16-bit unsigned integer (range: 0 (0h) to 65535 (FFFFh))
U32: 32-bit unsigned integer (range: 0 (0h) to 4294967295 (FFFFFFFFh))
VISIBLE STRING: Character string
Access Indicates whether the object can be read or written.
RO: Only reading is available
RW: Reading and writing are available
Mapping Indicates whether the object can be mapped in cyclic communication.
Impossible: The object cannot be mapped to TxPDO or RxPDO.
TxPDO: The object can be mapped to TxPDO.
RxPDO: The object can be mapped to RxPDO.
TxPDO/RxPDO: The object can be mapped to TxPDO and RxPDO.
Default Indicates the initial value of the object.
Range Indicates the object setting range. If a value outside the range is written, a parameter out of range error occurs.
Units Indicates the object unit.
Save Indicates whether data can be stored in the non-volatile memory.
Impossible: Data cannot be stored in the non-volatile memory. The value of the data written from the controller returns to the value of
"Default" when the power is shut off.
Possible: Data can be stored in the non-volatile memory with [Store Parameters (Obj. 1010h)]. Data is saved in the servo parameter
corresponding to the object. For the corresponding servo parameters, refer to "Parameter".
Parameter Indicates where data is stored in the non-volatile memory.
Description Describes the object.
ECT Indicates EtherCAT.
1 SUMMARY OF OBJECT DICTIONARY
1.1 Structure
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