MVME147-012
MVME147-012
PLC运行正常时,扫描周期的长短与用户应用程序的长短、CPU的运算速度、I/O点的情况等有关。通常用PLC执行1KB指令所需时间来说明其扫描速度(一般1-10ms/KB)。值得注意的是,不同指令执行时间是不同的,故选用不同指令所用的扫描时间将会不同。若用于高速系统要缩短扫描周期时,可从软硬件上同时考虑。PLC周期性循环扫描工作方式的显著特点是:可靠性高、抗*力强,但响应滞后、速度慢。
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Landis & Gyr Switching module Siemens PTM1. 2Q250
Landis & Gyr Switching module Siemens PTM1. 2Q250
Landis & Gyr Switching module Siemens PTM1. 2Q250
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Landis & Gyr Switching module Siemens PTM1. 2Y250T-M
Landis & Gyr Switching module Siemens PTM1. 2Y250T-M
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Landis & Gyr Thermostat ambiant QAA 52.2 QAA52. 2
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Landis & Staefa RVA47. 320 RVA 47.320
Landis & Staefa RVA47. 320 RVA 47.320
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Landis & Staefa Siemens Switching module Siemens PTX1. 082
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Landis & Steafa PRU 1.32 Heizungsregler PRU1.32
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Landis & Steafa RWI 65.02 Heating controller RWI 65.02
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Landis & Steafa RWI 65.02 Heating controller RWI 65.02
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Landis & Steafa SKB 62 Accionamiento regulador SKB62 Motor ajuste
Landis & Steafa SKB 62 Accionamiento regulador SKB62 Motor ajuste
Landis & Steafa SKB 62 Actuator SKB62 Servo motor
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Landis & Steafa SKB 62 Actuator SKB62 Servo motor
Landis & Steafa SKB 62 Mise en route SKB62 Servomoteur
Landis & Steafa SKB 62 Mise en route SKB62 Servomoteur
Landis & Steafa SKB 62 Slantrieb SKB62 Slmotor
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Landis & Steafa VVF61. 50 Válvula de globo VVF 61.50
Landis & Steafa VVF61. 50 Vanne de VVF 61.50
Landis & Steafa VVF61.50 Through valve VVF 61.50
Landis & Steafa VVF61.50 Through valve VVF 61.50
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Landis Staefa QAW20 QAW 20
Landis Staefa QAW20 QAW 20
Landis Staefa QAW20 QAW 20
Landis Staefa QAW20 QAW 20
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Landis&GYR PRV 2.32 Heizungsregler PRV2.32
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LAPP Kabel EPIC Klemmadapter TB-H-BE 24 BRE
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