Rtex Communication Timeout Error Protection (Err. 84.0) - Panasonic MINAS-A5NL Series Technical Reference

8-1-4 RTEX communication timeout error protection (Err. 84.0)

This alarm will occur when communication data has not been received, and MNM1221 has not output the reception
interrupt (missing reception) process start signal for predetermined period.
Cause
Detecting timing
Internal process upon
detecting error
Action
Alarm clear attribute
Display on COM LED
R2.0
• Communication data has not been received, and MNM1221 has not output the
reception interrupt (missing reception) process start signal for predetermined
period.
• When RTEX communication status is RUNNING.
• When synchronization between the communication and servo is established.
• When received data is read at the communication cycle.
• Use the previously received data for processing until an alarm is detected.
• If an alarm is detected, RTEX communication state changes to INITIAL state.
• Synchronization established between communication and servo is changed to
asynchronous state.
▪ The communication blackout occurs so that the host controller should
reestablish the communication.
• Check the communication cable for disconnection.
• Check the preceding stage node whether it is ready for transmission.
▪ For checking procedure, refer to Section 8-3.
• Check the RTEX communication data transmission cycle of the host controller.
• Check to see that the communication cycle set by Pr.7.20 RTEX
communication cycle setting matches the transmission cycle of the host
controller.
• 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.
• Can be cleared.
• Flashing in red
Motor Business Division, Appliances Company, Panasonic Corporation
No. SX-DSV02310 - 155 -