Mitsubishi QJ71MT91 User Manual

App - 2 App - 2
MELSEC-Q
A
PPENDICES
Appendix 2 Processing Time
This section explains the processing time of the QJ71MT91 by function.
The processing time of the QJ71MT91 may become longer than that calculated in this
section depending on the network load factor (line congestion), number of TCP
connections used simultaneously, and GX Developer connection existence.
Refer to the processing time calculated by the expression in this section when having
the QJ71MT91 communicate with one target device using an already established TCP
connection.
(1) Master function performance
(a) Automatic communication function performance
1) Automatic communication function communication time
[Unit: ms]
The automatic communication function communication time is the time
from when the repeat interval timer expires until the repeat interval
timer is started again after completion of communication with the
slave.
Tac
7 + Ts
2) Calculation items
Setting Item Description Unit
Tac Automatic communication function communication time ms
Ts Target slave device processing time ms
QJ71MT91
QJ71MT91
Repeat
interval timer
MODBUS /TCP
slave device
MODBUS /TCP
slave device
Start
Automatic communication
function communication time
End StartEnd
Start StartEnd
Start
Enlarged
Repeat
interval timer
Response
message
Response
message
Response
message
Response
message
Response
message
Response
message
Request
message
Request
message
Response
message
Request
message
Request
message
Response
message
Response
message
Request
message
QJ71MT91
processing
time
Request
message
sending time
Target slave device processing
time (Ts)
Response
message
sending time
QJ71MT91
processing
time
Processing
time
Processing
time
Request
message
Processing
time
Automatic communication function communication time
Response
message
APP

Mitsubishi QJ71MT91 Specifications

General

Brand	Mitsubishi
Model	QJ71MT91
Category	Controller
Language	English