NJR-CTB Command Guide154.4 Details of commands4.4.1 Error status@ERR Error statusFormat Return value onlyReturn value @ERR, errorParameter error: Error status1 = Erroneous parameter format or value2 = Undefined command or wrong format3 = Currently cannot be used.99 = Error other than errors aboveExample @GCHI@ERR,1Sending @GCHI command.Parameter errorRemarks -