5
FUNCTIONS
5.2 Master Function
5.2.1 Automatic communication function
5 - 14
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)
(6) Precautions for starting/stopping the automatic communication function
(a) When turning ON the Automatic communication parameter setting request/
Automatic communication start request (Y4/YC)
Both of the following conditions must be satisfied before turning ON the request
(Y4/YC).
• Condition 1: Module READY (X0) is ON.
• Condition 2: Intelligent function module switch setting change status (X10) is
OFF.
(b) Automatic communication function stop by Automatic communication stop request
(Y6/YE)
When using Automatic communication stop request (Y6/YE) to stop the automatic
communication function, satisfy all of the following conditions.
• Condition 1: Module READY (X0) is ON.
• Condition 2: Automatic communication operation status (X6/XE) is ON.
• Condition 3: Intelligent function module switch setting change status (X10) is
OFF.
Even if no response is sent from the communication target slave, the automatic
communication function does not stop until Automatic communication stop
request (Y6/YE) turns on.
(c) When Automatic communication stop request (Y6/YE) is executed while
automatic communication is stopped
An error (error code: 7370
H) will occur if Automatic communication stop request
(Y6/YE) is executed while the automatic communication function is stopped
(Automatic communication operation status (X6/XE) is OFF).
(d) Restarting the automatic communication function after issuing Automatic
communication stop request (Y6/YE)
Since Automatic function stop request (Y6/YE) stops the automatic
communication at the time of its execution, depending on the timing, the
automatic communication may be stopped during or immediately after
transmission of a request message.
For this reason, when restarting the automatic communication, allow a sufficient
time for the slave to process the request message that is received before the stop.
Failure to do so may cause an error due to collisions of the QJ71MB91 request
message and slave’s response message when automatic communication is
restarted.
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