Code ER97: IO LINK FAILURE(CHx yyGROUP)

Section: PMC alarm list If this alarm is issued on a machine that This alarm is issued when the once operated normally, possible causes number of I/O units is insufficient. are given below. This alarm is issued when the (1) When communication with an I/O unit number of I/O units set by the I/O in the yy group or later is disabled module allocation and I/O Link - The communication cable between allocation select function parameters the (yy-1) group and the yy group is does not match the number of I/O broken or in poor contact. units actually connected to the CNC. - An I/O unit in the yy group or later None of the I/O units connected to is powered off or is not powered on the channel on which this alarm was yet. issued is linked. The ladder program runs regardless - An I/O unit in the yy group is of this alarm. defective or an I/O unit in the (yy-1) group is defective. (2) When the CNC is powered off and back on again, an I/O unit remains powered on. - When the CNC is powered off and back on again, all I/O units must be powered off once. If this alarm is issued when the sequence program is debugged, any of the following settings may be incorrect in addition to the above causes. (1) I/O module allocation setting (2) Setting of the parameter of the I/O Link allocation data select function I/O Link channel 2-path allocation setting