Mitsubishi QJ71MB91 User Manual

5
FUNCTIONS
5.2 Master Function
5.2.1 Automatic communication function
5 - 4
1
OVERVIEW
2
SYSTEM CONFIGURATION
3
SPECIFICATIONS
4
MODBUS(R) STANDARD FUNCTIONS
5
FUNCTION
6
PRE-OPERATIONAL PROCEDURES AND SETTINGS
7
PARAMETER SETTING
8
UTILITY PACKAGE (GX Configurator-MB)
(1) To use the automatic communication function
Set the automatic communication parameters to use this function.
( Section 7.2)
Using the preset automatic communication parameters, communication processing is
performed automatically.
Refer to (2) and subsequent sections to set the automatic communication parameters.
(2) Automatic communication operation flowchart
Using the preset automatic communication parameters, the automatic communication
function operates as shown below based on the request interval timer and response
monitoring timer/broadcast delay settings.
Set the automatic communication parameters referring to the following flowchart.
Symbols (a) to (g) in the illustration correspond to sections (a) to (g) on subsequent pages.
Figure 5.2 Automatic communication operation flowchart
Error
(a) The Request interval timer
times out, and then restarts.
(c) The Response monitoring
timer/ Broadcast delay starts.
Transmitting
request message
Station No.1 to 247
Relevant
station status
Normal
Station No.0 (broadcast)
(d) The Broadcast delay
times out
(e) Receiving response
message from the slave
(f) The Response monitoring
timer times out
(g) The Response monitoring
timer is terminated
Turns OFF the corresponding bit in Automatic
communication operation status
(0: Being normally executed)
Turns ON the corresponding bit in Automatic
communication operation status
(1: Automatic communication
error occurred)
Wait for Request interval timer timeout
(b) Request message is issued
to the station.

Mitsubishi QJ71MB91 Specifications

General

Brand	Mitsubishi
Model	QJ71MB91
Category	Controller
Language	English