Hitachi L300P - Manual (Page 231)

L300P Inverter
Appendix B
B–5
Communications Protocol
Introduction to
Command List The network master sends a frame to initiate
communications with a slave, as shown in the
figure to the right. After the set waiting time
(per parameter C078, the inverter responds.
The following table lists the commands, single-character codes sent to a particular device on
the network.
NOTE: Use of command 08 – set inverter parameters to default values first requires setting the
initialization mode parameter B084 to 01 (initializes parameters only) or 02 (initializes param-
eters and clears the trip history).
Command
Code
Description User-selectable
00 Forward / Reverse / Stop command
✔
01 Setting of frequency in standard profile ✔
02 Setting of intelligent terminal state
✔
03 Read all monitor data (block read) —
04 Read inverter status —
05 Read trip history —
06 Read a single parameter value —
07 Write a single parameter value
✔
08 Set inverter parameters to default values
✔
09 Verifies that the requested setting can be
written to EEPROM. —
0A Writes a parameter value to EEPROM ✔
0B Requests the recalculation of internal constant
✔
Host
(master)
wait
time
frame
Inverter
(slave)
frame