我每次按照西门子调速说明书做都不成功，过程中经常报67，68号报警  67 1st computer link not ready for operation POWER ON
Cyclic or after POWER ON
Message frame transfer between host computer and NC is not possible
Host computer and NC are not synchronized owing to an incorrect input or a fault in the interface module. This
means that message frame transfer is not possible.
 Check programming of interface module
 Check machine data settings for computer link
 Check whether host computer is ready or connected
68 2nd computer link not ready for operation POWER ON
Cyclic or after POWER ON
Message frame transfer between host computer and NC is not possible
Host computer and NC are not synchronized owing to an incorrect input or a fault in the interface module. This
means that message frame transfer is not possible.
 Check programming of interface module
 Check machine data settings for computer link
 Check whether host computer is ready or connected