No. SX-DSV02310 - 154 -
R2.0 Motor Business Division, Appliances Company, Panasonic Corporation
8-1-3 RTEX continuous communication error protection 2 (Err. 83.1)
Th
is alarm will occur when reading error of the data delivered to the local node persists for the predetermined period.
This alarm indicates that CRC error, missing reception or cyclic error of the data delivered to the local node has
occurred.
If these errors occur alternatively, they are distinguished by the alarm.
Cause • Reading error (CRC error, missing reception or cyclic error) of the data
delivered to the local node persists for the predetermined period.
Detecting timing • When RTEX communication status is RUNNING.
• When received data is read at the communication cycle.
▪ Missing reception will be detected only when sync is established.
Internal process upon
detecting error
• Discard the received data.
• Use the previously received normal data for processing (servo is in alarm
status).
• Return Byte 1 of response as FFh.
• RTEX communication keeps RUNNING status.
▪ Because the communication continues, if the normal reception is possible
after occurrence of alarm, commands such as alarm clear can be received.
Action • Check the communication cable for excessive noises.
• Check the communication cable for length, layout arrangement, and
connections.
• Check that the communication cable is category 5-e or better shielded twisted
pair cable (STPC) specified by TIA/EIA-568.
• Replace the cable with a new one as necessary.
• Attach the ferrite core to the communication cable.
• Replace the servo driver as necessary.
Alarm clear attribute • Can be cleared.
Display on COM LED • Flashing in red
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