Time Required For Inverter Communication Instructions - Mitsubishi MELSEC iQ-F FX5 User Manual

Time required for inverter communication instructions

Outline
The period of time after one inverter communication instruction is driven until communication with the inverter is completed
(SM8029 turns ON) is considered as the required time for the inverter communication instruction as shown.
X0
M0
Inverter communication
SM8029
M0
SM8029
T
1
Communication
preparation processing
waiting time
*1 The time required for the "n"th time send/receive of the instruction.
Some inverter communication instructions execute several send/receives. The following table shows the number of send/
receives in each instruction.
Inverter communication instruction
IVCK
IVDR
IVRD Change of the 2nd parameter is unnecessary.
Change of the 2nd parameter is necessary.
IVWR Change of the 2nd parameter is unnecessary.
Change of the 2nd parameter is necessary.
IVBWR Number of times of communication (s2)
IVMC
*2 For parameters requiring change of the 2nd parameter, refer to Page 140 Second parameter specification code.
5 INVERTER COMMUNICATION
96
5.4 Specifications
SET M0
instruction
RST M0
First send/receive of
Second send/receive of
the instruction
T T
4 5
Request
Inverter
message
creation
The request message
is being sent
Tinv
T
2
the instruction
T [n] *1
6
T [n] T [n]
*1 *1
7 8
Inverter data
check time
Number of send/receives per instruction
1
1
2
*2
3
2
*2
3
(s2) × 2 + Number of parameters requiring change of the 2nd parameter
1
T
3
"N"th send/receive of
the instruction
Communication
end processing
T [n]
*1
9
The response message is
being received
*2