Troubleshooting; List Of Errors; An E7730 Error Has Occurred And Cc-Link Does Not Establish A Link - Mitsubishi Electric MELFA CR800-D Series Instruction Manual

8. Troubleshooting

Please read this chapter first if you suspect that some failure has occurred.

8.1. List of Errors

Table 8.1-1 List of Errors
Error
Error message
No.
CC-Link card is illegal (Error
7700
Code).
Cannot set a CC-Link master
7710
station.
Two CC-Link interface cards
7720
are mounted.
CC-Link data link error (local
7730
station connection error)
A (CC-Link) cable is not
connected or parameters do
7750
not match.
7760 CC-Link initialization error
A CC-Link register number is
7780
outside the range.
A signal number for CC-Link
7781
was specified.
*Refer to "the cc-Link system master local unit user's manual (volume on details)" for the details of the CC-Link
error code.
Refer to 8.3 When 7760 errors (abnormalities in cc-Link initialization) occur for the error which is not indicated
to the error code of the above-mentioned manual.

8.2. An E7730 Error Has Occurred and CC-Link does not Establish a Link

Please confirm the next item, when you cannot solve, even if measures.
1) Are the setup of rotary switch (MODE) on the CC-Link master-station unit and the setup of the
parameter "CCSPD" in agreement?
2) Is the terminator connected?
3) Is the CC-Link communication cable equipped with the ferrite core at the place of many noises?
4) The check of the status confirmation by LED, the short circuit of the CC-Link unit by the tester, etc. is
possible. Please refer to "open field network CC-Link troubleshooting guidance" for the check method.
Cause
CC-Link card is illegal.
A master station is already
set by the rotary switch.
Mount one card in slot 2.
There is a line error or the
master station's parameter
settings are invalid.
A cable is not connected or
parameters do not match.
The master station's
parameters do not match.
A register number entered
is outside the allowable
range.
A signal number for
CC-Link was specified.
41
Action
Please exchange the CC-Link
card.
Set the rotary switch to other
than 0.
It is not allowed to install two
cards. Install only one card.
Review the line and
parameters (see Section 8.2).
Reset the power and start
again.
Correct the parameters, and
then start again.
Enter the correct value.
Install a CC-Link interface
card.