Mitsubishi Electric A800 Programming Manual page 49

Read/Write method of inverter parameters
Inverter parameter data write timing chart
1) In user sequence program, user data
are stored into parameter write
data area (SD1242(SD1244)).
Y29(Y2B)
Parameter
write command
X29(X2B)
Parameter
write completion
Inverter parameter
SD1242(SD1244)
Parameter write
data
User sequence
data
48
PLC Function
2) Write command is turned
ON in user sequence.
3) Turns ON when inverter CPU completes inverter
parameter data write.
"0" written to SD1150 indicates normal completion.
Any value other than "0" indicates abnormal completion.
4) After confirmation of write
completion, write command
is turned OFF.
5) Inverter CPU confirms
that write command is
OFF and turns OFF write
completion.