用户定义故障可以记录到PLC故障表中。发生用户定义故障时，故障作为“应用程序消息(错误代码)”显示在适当的故障表中，并且后面有最多24个字符的描述性消息。用户可以.定义描述性消息的所有字符。虽然消息必须以null字符结束，例如0，但是null字符不计入24字符之内。如果消息中包含的字符数大于24，则只显示24个字符。特定的用户定义故障可以用于设定系统状态变量(%SA0081–%SA0112).

Buss Tron Rectifier Fuse KBC 250, 250 Amp, #17815

SCI Circuit Board 080-2440 #14648

General Electric Transformer 9T58K2810 #14742

M2 Sensors EFW-TGC Photoelectric Switch, #10400

Van Dorn Ceramic Heater Band 8.5″ X 4″ 307695-B, #3968

Magnetek AC Motor H256, 1/2 Hp, 1725 RPM #12022

AIC Heater Band A-94C501-XB, 9.5 x 5, #3969

AIC Heater Band A-94C501-XB, 9.5 x 5, #3970

AIC Heater Band A-94C541-XB, 9.5″x 5.5″, #3972

AIC Heater Band A-94C601-XB, 9.5″ x 6″, #3983

Bimba Hall Effect Switch HSCQCX, 5 Meter, ** #17566

Ogden Mighti-Tuff 60110-3544 2100 Watt #22186

HSS Poland Bit 5-618-220, 2 1/4″ x 1/2″ #13324

Indramat Circuit Board 109-468-3205 a-4 #34252

Festo Input Module VIGE-03-FB-8, 18655 #13234

Allen Bradley Input Module 1794-IB16 #29228

Parker Union Elbow 24 ELO-S #29722

Lubriquip Pressure Switch 542-210-120 #32448

Miller Rod Seal & Bushing Assy 051-KR015-200, #12566

Bimba Cylinder 704-4RMT 3.5″ Stroke #32314

Allen Bradley Input Module 1746-IA8 Series A #25319

Parker Cylinder 01.50 NLP9 4.250, 4 1/8″ Stroke #32321

Schmersal Controller MH 302-11Y, 6 Amp #26256

Mac Valve PPC5C-AGB-AGEA-?DBA-EO #30470