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MELSEC
16 TROUBLESHOOTING
16.5 CC-Link System Troubleshooting
This chapter describes the details of the problems that may occur in the CC-Link
System. It presents a list of check items and procedures for possible problems.
16.5.1 Verification of problem occurrence
The following shows the details of check items and procedures for possible problems.
Description of problem
Check item
Check procedure
The entire system cannot
perform data link.
Are there any disconnected cables?
• Check the cable connection visually or with a line
test.
• Check the line status (SW0090).
Are terminal resistors connected to the terminal
stations of the CC-Link system?
Connect the supplied terminal resistors to the
terminal stations at both ends of the CC-Link
system.
Are the correct terminal resistors connected?
Connect the terminal resistors that match the
cable type used to the terminal stations located at
both ends of the CC-Link system. (Refer to
Section 3.3)
Has an error occurred in the CC-Link Ver.2 board?
Check the error code of the CC-Link Ver.2 board
and take a necessary corrective action.
Are the CC-Link parameters set for the CC-Link
Ver.2 board?
Check the contents of the parameters for the CC-
Link Ver.2 board.
Has an error occurred in the master station?
• Check the own station parameter status
(SW0068).
• Check the switch setting status (SW006A).
• Check the loading status (SW0069).
• Check to see if the "ERR." LED on the master
station is flashing. (Refer to Section 16.5)
Cannot receive inputs from a
remote I/O station.
Is the corresponding remote I/O station performing
data link?
• Check the LED displays on the corresponding
remote I/O station.
• Check the communication status of the master
station with other stations (SW0080 to SW0083).
Is data read from the correct address of the
remote input RX (buffer memory)?
Check the user program.
Is the correct master station's parameter
information area (CPU internal parameters, default
parameters) being used?
Check the parameter information (SW0067).
Is the corresponding remote I/O station number
recognized by the master station?
• Check the parameters.
• Check the total number of stations (SW0070).
• Check the maximum communication station
number (SW0071).
• Check the number of connected modules
(SW0072).
Is the corresponding station set as a reserved
station?
• Check the parameters.
• Check the reserved station designation status
(SW0074 to SW0077).
Are there any duplicate station numbers?
• Check the station number setting.
• Check the installation status (SW0069).
• Check the station number duplicate status
(SW0098 to SW009B).
Do the settings match?
• Check the installation status (SW0069).
• Check the station number duplicate status
(SW0098 to SW009B).
• Check the installation/parameter matching status
(SW009C to SW009F).
Содержание Q80BD-J61BT11N
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Страница 34: ...1 10 1 10 MELSEC 1 OVERVIEW MEMO ...
Страница 54: ...3 12 3 12 MELSEC 3 SPECIFICATIONS MEMO ...
Страница 124: ...5 16 5 16 MELSEC 5 PROCEDURE BEFORE STARTING THE DATA LINK MEMO ...
Страница 160: ...9 2 9 2 MELSEC 9 MELSEC DATA LINK LIBRARY MEMO 9 ...
Страница 200: ...12 16 12 16 MELSEC 12 COMMUNICATION BETWEEN THE MASTER STATION AND LOCAL STATIONS MEMO ...
Страница 212: ...13 12 13 12 MELSEC 13 COMMUNICATION BETWEEN THE MASTER STATION AND INTELLIGENT DEVICE STATION AJ65BT R2 MEMO ...
Страница 228: ...14 16 14 16 MELSEC 14 COMMUNICATION BETWEEN THE MASTER STATION AND INTELLIGENT DEVICE STATION AJ65BT D75P2 S3 MEMO ...
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