PLC工作过程的特点 ：：
(1)PLC采用集中采样、集中输出的工作方式，这种方式减少了外界干扰的影响。
(2)PLC的工作过程是循环扫描的过程，循环扫描时间的长短取决于指令执行速度、用户程序的长度等因素。
(3)输出对输入的影响有滞后现象。PLC采用集中采样、集中输出的工作方式，当采样阶段结束后，输入状态的变化将要等到下一个采样周期才能被接收，因此这个滞后时间的长短又主要取决于循环周期的长短。此外，影响滞后时间的因素还有输入滤波时间、输出电路的滞后时间等。
(4)输出映像寄存器的内容取决于用户程序扫描执行的结果。
(5)输出锁存器的内容由上一次输出刷新期间输出映像寄存器中的数据决定。
(6)PLC当前实际的输出状态由输出锁存器的内容决定。
Swagelok actuator for BK series valve 1/4" , 4BK, LOT OF 7, SHIPSAMEDAY
SWAGELOK 6LV-8-WVCR-6-DF-4, Reducer VCR 1/2" FVCR x 1/4" FVCR, SHIPSAMEDAY#Q24
SWAGELOK 6LV-4-WVCR-9-DF, Female Elbow 1/4" FVCR, LOT OF 2, SHIPSAMEDAY#S8A
SWAGELOK 3-Way Ball Valve 3/8", SS-44XTS6, SHIPSAMEDAY#1220P1
Swagelok 3-Way Ball Valve 3/8", SS-43GXS6, SS43GXS6, SHIPSAMEDAY #1373E4
SWAGELOK 3-Way Ball Valve 1/4", SS-42GXS4, SS42GXS4, SHIPSAMEDAY#1325F2
SWAGELOK 3-Way Ball Valve 1/4" FNPT, SS-44XF4, SHIPSAMEDAY#131Q7
SWAGELOK 3-Way Ball Valve 1/4" FNPT, SS-43GXF4-1466, SHIPSAMEDAY #M13
SWAGELOK 3-Way Ball Valve 1/4" FNPT, SS-43GXF4-1466, SHIPSAMEDAY
SWAGELOK 3-Way Ball Valve 1/2", SS-45XS8, SHIPSAMEDAY
Swagelok 316L-4-VCO-1A, 316L-4-VCO-3A, SS-4-VCO-3-4MTW, SS-4-VCO-3-4TA #128R28
Swagelok 3 Way Valve 1/4" Fnpt X 1/4" Tube, MA2610001, W092137, Shipsameday AA#3
Swagelok 3 WAY BALL VALVE 1/8" FNPT, SS-42XF2, SS42XF2, SHIPSAMEDAY #1174P5
Swagelok 3 WAY BALL VALVE 1/8", SS-41GXS2, SS41GXS2, LOT OF 2 SHIPSAMEDAY#1171N3
Swagelok 3 WAY BALL VALVE 1/4" FNPT, SS-43FX4, Shipsameday #L18
Swagelok 1/2" VCR Poppet Check Valve 1 Psi, SS-CHVCR8-1, Shipsameday #1471P6
Susumu Res .47 Ohm 1/2W 1%, RL1632-R470-F, RL16R.47FCT-ND, Lot Of 1000, E#110
Superlok Ball Valve 1", SBV210-S-16, SBV210S16 1000psi 316 SCD, Shipsamday, Z#11
SUPER DOOR KING HET 8055-080, MicroPLUS Receiver, SHIPSAMEDAY #1212V1
SUNX SS-D20, SSD20, Photoelectric Sensor, SHIPSAMEDAY#108P11
Sunx S-LINK Terminal SLTBP8TY, SL-TBP8-TY, SL-TBP8, Shipsameday#1220C
Sunx S-LINK Terminal SLTBP8TY, SL-TBP8-TY, SL-TBP8, missing top label #1220K
Sunx S-LINK Terminal SLTB16, SL-TB16, Shipsameday #1220M
Sunx S-LINK Gateway Controller SLGU1C, SL-GU1-1, N8Q07, Shipsameday #1220L
SUNX SH-21E, SH21E, Photoelectric Sensor, BOX OF 3, SHIPSAMEDAY#108P17
SUNX SH-21E, SH21E, Photoelectric Sensor, BOX OF 2, SHIPSAMEDAY#108P15
SUNX SH-21E, Photoelectric Sensor, BOX OF 2, Only 2 Screws, SHIPSAMEDAY#108P20
SUNX SH-21, SH21, Photoelectric Sensor, BOX OF 2, SHIPSAMEDAY#108P13
SUNX Proximity Sensor, GS-5S, GS-5S513K, GS-5S-513K, SHIPSAMEDAY
SUNX Photoelectric Sensor SS2-300F, SS2300F, BOX OF 2, SHIPSAMEDAY#108P10
SUNX Photoelectric Sensor EX-13P (2X) & EX-13AD (2X) Box Of 4, SHIPSAMEDAY#108P9
SUNX Photoelectric Sensor EX-13P (2X) & EX-13AD (2X) Box Of 4, SHIPSAMEDAY#108P7
SUNX Photoelectric Sensor EX-13EP, EX13EP, Box Of 2, SHIPSAMEDAY#108P8
SUNX PHOTOELECTRIC Beam Sensor A7N, EX2-M5EP, EX2M5EP #1646B17
Sunx NPS-C7W, NPSC7W, ShipSameDay W/2-3 DaysShip#1173R
SUNX EX-13P, EX13P, Photoelectric Sensor, BOX OF 2, SHIPSAMEDAY#108P14
SUNX EX-11P, EX11P, Photoelectric Sensor, BOX OF 4, SHIPSAMEDAY#108P12
SUNX EX-11EP, EX11EP, , Photoelectric Sensor, BOX OF 3, SHIPSAMEDAY#108P16
SUNX EQ-22, EQ22, Photoelectric Sensor Switch, SHIPSAMEDAY#129V13
SUNX EQ-22, EQ22, Photoelectric Sensor Switch, Box Of 2, SHIPSAMEDAY#108P6
SUNX DP2-42N, Display Digital Pressure Sensor DP242N, UDP242N SHIPSAMEDAY#129V11
SUNX DP2-41E, DP241E, LED DISPLAY DIGITAL PRESSURE 100kPa, UDP241E, SHIPSAMEDAY
SUNX DP2-41E, Display Digital Pressure Sensor DP241E, UDP241N SHIPSAMEDAY#129V12
SUNX Amplifier Photoelectric, FX4L-A3R, FX4LA3R, Lot Of 2, SHIPSAMEDAY#108P3
SUNX Amplifier Photoelectric, EX2-M5ED & EX2-M5EP, BOX OF 2, SHIPSAMEDAY#108P4
SUNX Amplifier Photoelectric Sensor, SS-A5, SSA5, Lot Of 2, SHIPSAMEDAY#108P2
Sunny Elec Tuning Fork 32.768khz PTH Cyl 20 Ppm, TF210-00401, Lot Of 1065, F#48
Sun Electric HEATER TEMPERATURE CONTROL, AEO-000-162-S2,
Summer's Lease By John Mortrimer, Franklin Library, Hardcover
STMicroelectronics Operational Amplifiers, TS912BIDT, LOT OF 89
STMicroelectronics Inverters Hex Inverter, 74AC04M, LOT OF 38, SHIPSAMEWDAY
