Commands Supported By The Mdu; List Of Commands - Mitsubishi Electric NF250-SEV Programming Manual

6. Commands supported by the MDU

To monitor or set each measurement value or setting value of the MDU, write the command, group number, channel
number, and unit number to the remote register RWw of the MDU. Then, you can monitor the measurement values
and set the setting values.
(Group number and unit number are required only for the intermodel standard commands.)
(1) Commands
Commands show contents of a request given by the sequencer to the MDU.
Intermodel standard commands and model specific commands are used. See "6.1 List of commands" for details.
(2) Group numbers and channel numbers
These numbers are allocated to various data of the MDU so that they are identified when intermodel standard
commands are used. Numbers are allocated in the matrix structure of group numbers and channel numbers. See
the list of group channels of each intermodel standard command for details of the numbers.
Group No.
Channel No.
(3) Unit numbers
The unit number of the MDU is fixed to 0h.
For intermodel standard commands, the number is indicated by an 8-bit data consisting of high 4 bits (unit number)
and low 4 bits (command).
For example, when the unit number is 0h and the command is 1h, the unit number is indicated by "01h".

6.1 List of commands

The following table lists the commands supported by the MDU. See "6.2 Details of commands" for details of each
command.
Table 6.1 List of commands
Command Name
01h Data monitor
02h Data set
03h Clock data set
Note 1：Command sending is available only when the Remote ready (Remote input (RX (n+1) B)) is ON (1).
Note 2：To send commands and receive reply data, use the command execution request flag (Remote output (RYnF)
and the command completion reply flag (Remote input (RXnF)). See "5.4 Normal communication " for details.
Note 3：When the present value and the maximum value are monitored in succession, a maximum value smaller than
the present value may be monitored depending on the data update timing of the MDU.
The number allocated to each measurement factor (current, voltage, etc.)
The number allocated to each category according to the details of each measurement factor
( phase 1, phase 2, etc.)
Description
Monitor of various data
(measurement data, setting data, etc.)
Setting of various data
(phase wire system, demand time, etc.)
Setting of date and clock time data
Description
Other than date and clock time data
28
Remark
KGA120334-C