Mitsubishi Electric MELSERVO-JE MR-JE-C, Instruction Manual

Page: 71 / 86

6. MODBUS REGISTERS
6 - 34
6.3.7 Access log 1 (2A64h)
Address Name
Data
type
Read/
write
No. of Points/
No. of Registers
Continuous read/
continuous write
2A64h Access log 1 (Access log 1) 4 bytes Read 2 Impossible
The access log 1 can be read.
(1) Usage
Read the access log 1 using this register.
The access log 1 displays the address that was last accessed successfully in Modbus communication.
Access log 1 Response data
Higher 2 bytes Address : xxxxh
Lower 2 bytes For manufacturer setting : 00yyh
For example, when the input device status (Address: 2C12h) is accessed successfully, "2C120004h" is
read from the access log 1.
6.3.8 Access log 2 (2A65h)
Address Name
Data
type
Read/
write
No. of Points/
No. of Registers
Continuous read/
continuous write
2A65h Access log 2 (Access log 2) 2 bytes Read 1 Impossible
The access log 2 can be read.
(1) Usage
Read the access log 2 using this register.
The access log 2 displays the number of addresses that were accessed successfully in Modbus
communication.
Use this register when an access error has occurred in the continuous read/write.
For example, when an error has occurred while the registers for monitoring (address: 2B01h to 2B0Ah)
are continuously read, the error has occurred at the address 2B07h because the read value of the
access log 2 is "0006h".