PLC programmable logic controller, FAQ - Industrial control -

1, what role does the FX3G series programmable controller battery? The battery in the need to keep useing the following content ( Battery backup) When use. In addition to memory, the soft components off electricity to keep the current moment, need to set parameters. Through the content of the battery backup: auxiliary relay M1536 ~ M7679, state S1000 ~ S4095, data register D1100 ~ D7999, extension registers R0 ~ R23999. The current time timing ( Factory has by programmable controller built-in large capacity backup) 。

2. How to confirm the version of the FX series PLC? Can by monitoring the special data register D8001 ( Decimal number) To confirm the programmable controller's version. After the first two digits represent the PLC model, 3 digits represent the version information. For example: D8001 value is 24251, 24 representative of FX2N PLC controller types, FX3U, FX3NC, FX3UC series, 251 on behalf of the version information is Ver. 2.

3, FX3U, 51 FX3UC, FX3G series programmable controller memory write enable number is how much? Storage boxes allow write number under 10000 times, FX3G programmable controller built-in memory ( eepm) Write enable number under 20000 times.

4, 2, hexadecimal digits and processing range of floating-point Numbers is how much? Effective digits: 2 hexadecimal floating-point number of effective as expressed in decimal number, about 7 digits. 2 a binary floating-point processing range as shown below. - minimum absolute value x 10-1175494 44 - the largest absolute value 3402823 x 1032

5, 10 hexadecimal constants to specify the range is how much? ( K] As symbols of said decimal integer, mainly used for the specified timer and counter value, or the value in application instruction operand. ( For example: K1234) Decimal constants of the specified range as shown below. - use words data ( 16) When: K - Data (32768 ~ K32767 - use two words 32) When: K - 2147483648 ~ K2, 147483647

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