Checking The Network Status - Mitsubishi Electric MELSEC iQ-R Series User Manual

Checking the network status

Check whether the IO controller and the RJ71PN93 communicate with each other normally.
Communications are being performed normally when the LEDs and input signals of the RJ71PN93 are in the following status
after execution of the program.
For the program, refer to the following.
Page 37 Program examples
• LEDs of the RJ71PN93
Name
RUN LED
ERR LED
BF LED
SD/RD LED (The Ethernet port in use.)
SD/RD LED (The Ethernet port not in use.)
• Input signals
Name
'Module watchdog timer error' (X0)
'IO data exchanging' (X1)
'IO data receive error' (X2)
'Module error' (X3)
'Module READY' (X1D)
Precautions
Since the RJ71PN93 sends invalid data to the IO controller while 'IO data send area refresh directive' (Y0) is off, the IO
controller may detect an error. In this case, turn on 'IO data send area refresh directive' (Y0) and check that the error has been
cleared.
7 COMMUNICATION EXAMPLE
36
7.1 Example of I/O Data Exchanges
Status
On
Off
Off
On, flashing
Off
Status
Off
On
Off
Off
On