Panasonic MINAS-A5NL Series Technical Reference page 175

When the network cable connected to the receiving side breaks, Err. 84.0 (RTEX communication timeout error occurs
protection) occurs.
When LINK LED that has been lighting in green is turned off, the possible cause is: disconnection or loose connection of
cable, or resetting (power shutdown or reset command) of the node connected to the preceding stage.
Master
Slave
Note: When the master detects time out, send servo off command to all servos without initializing the communication to
shut down the servos connected upstream of disconnection point.
If the communication is initialized, all servos will cause Err. 84.0(RTEX communication timeout error protection)
making it difficult to locate the disconnected section.
R2.0
Host
controller
RX TX
[LINK]
Lighting in green
No alarm
Is the cable connected to RX terminal of the servo driver
(Causing Err. 84.0) abnormal?
Is the servo driver upstream of the servo driver (Causing Err. 84.0) reset?
RX TX
RX
[LINK]
Lighting in green Lighting in green
Err. 84.0 Err. 84.0
Err. 84.0 has occurred but LINK is lighting in green
Motor Business Division, Appliances Company, Panasonic Corporation
No. SX-DSV02310 - 167 -
RTEX
TX
MINAS-A5N
[LINK]