6SY8102-0LA03 Siemens dual port PPC module

6SY81020LA03 programmable controller module has the advantages of portability, strong anti-interference, high cost performance, low power consumption, fast data transmission rate and long maximum transmission distance, which makes it widely used in various fields of daily life.

6SY8102-0LA03 programmable controller
(1) Process analysis
Deeply understand the process, working characteristics and control requirements of the control object, divide the control stages, summarize the characteristics of each stage and the conversion conditions between each stage, and draw the control flow chart or functional flow chart.

(2) Select the appropriate PLC type
When selecting PLC model, the following points are mainly considered:
Function selection. For Small PLC, I / O expansion module, a / D and D / a module and instruction function (such as interrupt, PID, etc.) are mainly considered.

Determination of I / O points. Count the I / O points of the switching value and analog value of the controlled system, and consider the future expansion (generally plus 10% ~ 20% reserve), so as to select the I / O points and output specifications of PLC.

memory estimation. The memory capacity required by the user program is mainly related to the I / O points of the system, control requirements, length of program structure and other factors. Generally, it can be estimated by the following formula: storage capacity = switching value input points × 10 + switching value output points × 8 + number of analog channels × 100 + number of timers / counters × 2 + number of communication interfaces × 300 + reserve.

(3) Assign I / O points. Assign the input / output points of PLC, write the input / output distribution table or draw the wiring diagram of input / output terminals, and then carry out PLC program design, control cabinet or console design and on-site construction.

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