100 in stock

Siemens Simatic S5 Digital Output 6ES5451-4UA13

Brand/Manufacturer: Siemens

Order Number: 6ES5451-4UA13

Type: Siemens Simatic S5

Country of Origin: Germany

Condition: Original Brand

Lead Time: Available in stock

Payment Term: 100% TT In Advance

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Description

The program is loaded into the user memory when the PLC is started up. The memory capacity represents a limiting factor for the size of the program so that, for instance, extensive programs cannot be executed in every PLC. If data from the process is additionally stored, the memory space available for the program is again reduced.

The execution time of the program determines the response time of the programmable controller to signals from the process. Since execution times vary from program to program, the execution times specified in Table 1-4 are referred to as 1024 binary statements (1 statement corresponds to 2 bytes).

Programs can be kept manageable if a linear sequence of operations is broken down into individual technologically related sections that are combined to form software blocks. Organization blocks can be used in which the reaction of the system to interrupts in cyclic program execution can be programmed.

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