Mitsubishi Electric FR-E800 Instruction Manual (Communication page 119

• Response message format
The following is the format of a response message sent from the inverter to the external device. The response message
data length is 2048 bytes at the maximum.
• Normal completion
Header Subheader
• Failed completion
Header Subheader
Item
Header —
Subheader
(QnA-compatible 2 bytes
3E frame)
Subheader
(QnA-compatible 6 bytes
4E frame)
Destination
1 byte
network No.
Destination
1 byte
station No.
Destination unit I/
2 bytes
O No.
Destination
multidrop station 1 byte
No.
Request data
2 bytes
length
Monitoring timer 2 bytes
Request data Variable
118
2. Ethernet Communication
2.10 SLMP
Destination
Destination Destination unit
network
station No. I/O No.
No.
Destination Destination Destination unit
network station I/O No.
No. No.
End code
Size Endian
— Header for TCP/IP or UDP. The header is added by the external device before transmission.
Request: H5000
Response: HD000
Big
Request: H5400 + Serial No.
Response: HD400 + Serial No.
Specify the network No. of the access
destination. Use a hexadecimal value to specify
— the network number.
Own station: H00
Other stations: H01 to HEF (1 to 239)
Specify the station No. of the access destination.
Use a hexadecimal value to specify the station
— number.
Own station: HFF (when the network No. is H00)
Other stations: H01 to H78 (1 to 120)
Little Fixed to H03FF
— Fixed to H00
Specify the data length from the monitoring timer to the request data in hexadecimal.
Little
Example) 24 bytes: H1800
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
Little • When the access destination is the 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 parameter clear: H15 to H40 (5.25 to 10 s)
• When the access destination is any 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 parameter clear: H15 to H40 (5.25 to 60 s)
Specify the command, subcommand, and data that indicate the requested operation. (Refer
Little
to page
Destination Response data End code
multidrop
length
station No.
Destination
Response data
multidrop
length
station
No.
Network Station Destination unit
No. No. I/O No.
(responding (responding
station) station)
Error information
*1
+ H0000
*1
+ H0000
119.)
Response data
Destination Command Subcommand
multidrop
station No.
Description
The own station has a network No. of H00
and a station No. of HFF. The other
stations have other values.
The request data addressed to the own
station is received regardless of the
network No. and station No. settings.
The request data addressed to the other
stations is received when the Pr.1424 and
Pr.1425 settings are the same.
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