Haas Alarm: 315 (M) INVALID P CODE IN M98, M97, M96, G47 OR G65 – P code must be the name of a program stored in memory without a decimal point for M98 and must be a valid N number for M99. If G47 commanded, then P must be 0 for text engraving and 1 for sequential serial numbers or ASCII value between 32 and 126.