Explanation of PLC (Siemens) S7-200 programs 1

2017-09-04View Original

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This post was last edited by xzzgjxmf on 2017-9-4 at 12:59. The part marked with ? in the image How should all these be understood (analog values)?

Reply #22017-09-04

Analog signals need to be processed. You can search online for programs for analog signal processing. There are many online.

Reply #32017-09-04

SM is the abbreviation for special memory, which refers to special registers. SM0.0 is always 1; SM0.5 triggers a pulse with a duration of 0.5 seconds per second. The other values are all integers.

Reply #42017-09-05

SM0.0 operation status monitoring: it is always 1 during operation.

Reply #52017-09-05

25600 is the conversion range for analog values. A 4 to 20 milliampere signal corresponds to 6400 to 32000.

Reply #62017-09-08

SM is a special register. SM0.0: This bit is always 1. SM0.5: A pulse with a period of 1 second and a duty cycle of 50%

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Explanation of PLC (Siemens) S7-200 programs 1

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