Plc Communication Settings - Mitsubishi MELSEC iQ-F FX5 User Manual

Parameters (test operation, operation)
Parameters that must be adjusted for test operation and operation are as follows.
Parameter No. Parameter item
Pr.121 Number of communication retries
Pr.122 Communication check time interval
■Cautions during setting
Caution for setting the PU communication check time interval (Pr.122)
Description
During adjustment or when communication with the PLC is not executed
periodically
When communication with the PLC is not executed
Set the communication time in the following cases.
• When it is necessary to monitor absence of communication for a certain
time and stop the inverter in such a case while communication with the PLC
is being executed continuously
• When it is necessary to stop the motor at the point when the PLC mode is
changed from RUN→STOP
Parameters (set as needed)
The table below shows parameters to be considered when using various system configurations and inverters.
For the method of use, refer to the V500 series inverter manual.
Parameter No. Parameter item
Pr.342 Communication EEPROM write
selection
5.7

PLC Communication settings

For the FX5 communication settings of this function, parameters are set using GX Works3. For details about GX Works3, refer
to GX Works3 Operating Manual.
Setting of parameter differs according to the module used. The procedure for each module is as follows.
Built-in RS-485 port (CH1)
Navigation Window  Parameter  FX5UCPU  Module Parameter  485 Serial Port
Window
The following screen will be displayed if [Inverter Communication] is set for the communication protocol type.
■Basic Settings
■Fixed Setting
5 INVERTER COMMUNICATION
118
5.7 PLC Communication settings
Setting Set conditions
value
9999 Set the value shown on the left during adjustment, and set a value from 1 to
10 during operation.
9999 Set the value shown on the left during adjustment, and set a value in
accordance with the system specification during operation.
Setting value
9999
0
1 to 9998
Setting Set conditions
value
0 or 1 0: EEPROM is written.
1: RAM is written.