Kruger Ecowatt K320 Series Operation Manual page 294

Ecowatt Drive K320 series
®
RTU slave response (sent from the VFD to the master):
START
ADDR
CMD
High-order bit of data writing
address
Low-order bit of data writing
address
Data content high-order bit
Data content low-order bit
CRC low-order bit
CRC high-order bit
END
Note: Sections 9.4.1 and 9.4.2 mainly describe the command formats. For the detailed
application, see section 9.4.8.
9.4.3 Command code 08H, diagnosis
Sub-function code description:
Sub-function code
For example, to query about the circuit detection information about the VFD whose address is
01H, the query and return strings are the same, and the formats are described in the following
tables.
RTU master command:
MSB of the sub-function code
LSB of the sub-function code
MSB of data
LSB of data
LSB of CRC CHK
MSB of CRC CHK
T1-T2-T3-T4 (time gap with a min. length of 3.5 bytes)
T1-T2-T3-T4 (time gap with a min. length of 3.5 bytes)
0000
START
ADDR
CMD
END
Return data based on query requests
T1-T2-T3-T4 (transmission time of 3.5 bytes)
T1-T2-T3-T4 (transmission time of 3.5 bytes)
-285-
Communication
02H
06H
00H
04H
13H
88H
C5H
6EH
Description
01H
08H
00H
00H
12H
ABH
ADH
14H