FECA916E Invalid CNUM parm. Valid parms are ON, OFF, or blank.
Explanation
CNUM was issued with an invalid parameter.
Issuing CNUM with no parameter acts as an ON/OFF toggle. ON and
OFF are the only parameters accepted. ON turns the CNUM display
on. OFF turns the CNUM display off.
User response
Use a valid CNUM parameter (ON, OFF, or
blank)