不要在两个不同子程序中编入带相同的基准地址的OFDT功能块。不应该编-一个围绕定时器功能的跳转的程序。如果你使用递归(也就是说子程序直接或间接调用本身)，要编制程序块以便在定时器递归调用本身之前调用定时器。在带参数块内部使用定时器的相关信息，见8-错误!未定义书签。如果前次扫描时间大于PV,OFDT终止(关断能流)不接收能流的第一次扫描。
Allen Bradley 1771-A4B 16 Slot Chassis #13155
Jokab Safety Relay JSBRT11 #16862-63
Applied Instruments Heater Band A-M240C130M3-1B 240
Barber Colman Maco III B Faceplate #10963
Numatics Solenoid Valve 153RQ115J #16925
Ogden Heat Element, KP-3-0603, 460 Volt, #12170
Ogden Heat Element, KP-6-0275-M1, 460 Volt, #12172
Fisher Controls Gas Pressure Regulator 627-123 #33905
Heat Element, LR87178, 480 Volt, 3.5 Kw, #12171
Appl Eng Heat Element, TPN01359, 460 Volt, #12174
STI Safety Switch 44508-0110, #21303
Rexroth Valve 4WE6JP1 AG24N9K4 V #29612
Beckhoff DeviceNet Bus Coupler BK5200 #29659
Whitlock Heat Element, 15855, 460 Volt, #12175
Keystone Butterfly Valve 206-060-100-003 #29540
Banner Sensor 57159 9948H #13426
Imperial Eastman Hydraulic Hose 2″ Diameter #23063
Dayco Hydraulic Hose 1 1/4″ Diameter #23064
Imperial Eastman Hydraulic Hose 2″ Diameter #23065
Imperial Eastman Hydraulic Hose 1 1/2″ Diameter #23067
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