(N) Operation via communication and its settings
31
2
GROUP
N
The serial No. is given by the external device for message recognition. If a request message with a serial No. is sent, the same serial No. will
also be added on the response message. The serial No. is used when multiple request messages are sent from an external device to the same
inverter.
Monitoring timer
2 bytes
Little
Set the waiting time until the inverter completes reading/writing after receiving a request
message from the external device.
When the inverter does not return the response message within the waiting time, the
response message will be discarded.
H0000: Unlimited (until the execution is completed)
H0001 to HFFFF (1 to 65535): Waiting time (Unit: 0.25 s)
Recommended setting
Request data
Variable
Little
Specify the command, subcommand, and data that indicate the requested operation. (Refer
to
.)
Response data
length
2 bytes
Little
The data length from the end code to the response data (when completed) or error
information (when failed) is stored in hexadecimal. (Unit: byte)
End code
2 bytes
Little
The command processing result is stored. The value "0" is stored for normal completion. The
error code of the access destination (refer to
) is stored for failed completion.
Response data
Variable
Little
When the command is completed normally, data such as the read data corresponding to the
command is stored.
Error information
9 bytes
—
The network No. (responding station) (1 byte), station No. (responding station) (1 byte),
destination unit I/O No. (2 bytes), and destination multidrop station No. (1 byte) of the
stations which respond errors are stored for failed completion. Numbers different from those
in the request message may be stored because the information on the station with error
response is stored. The command (2 bytes) and the subcommand (2 bytes) being issued
when an error occurred are also stored.
Footer
—
—
The footer is used for the TCP/IP and UDP/IP protocols. The footer is added by the external
device before transmission.
Item
Size
Endian
Description
Access
destination
Recommended setting
Own station
Monitoring, operation command, frequency
setting (RAM)
H1 to H40 (0.25 to 10 s)
Parameter read/write, frequency setting
(EEPROM)
H1 to H40 (0.25 to 10 s)
Parameter clear / all clear
H15 to H40 (5.25 to 10 s)
Other station
Monitoring, operation command, frequency
setting (RAM)
H2 to H40 (0.5 to 60 s)
Parameter read/write, frequency setting
(EEPROM)
H2 to H40 (0.5 to 60 s)
Parameter clear / all clear
H15 to H40 (5.25 to 60 s)
