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Changes for page 02 Devices

Last modified by Mora Zhou on 2023/11/22 14:13
From version 17.1
edited by Stone Wu
on 2022/09/23 17:30
Change comment: There is no comment for this version
To version 25.1
edited by Mora Zhou
on 2023/11/22 14:13
Change comment: There is no comment for this version

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116 116  [[image:02(1)_html_740e6ef971b9c6de.gif||height="175" width="598" class="img-thumbnail"]]
117 117  
118 -The setting value of the 16-bit up counter is 1 to 32767. As shown in the working process of the up counter in Figure c, after the normally open contact of X1 in the figure is turned on, C0 is reset, its corresponding bit storage unit is set to 0, the normally open contact of C0 is disconnected, and the normally closed contact Point is turned on, and its current counter value is set to 0 at the same time.
118 +The setting value of the 16-bit up counter is 1 to 32767. As shown in the working process of the up counter in Figure C, after the normally open contact of X1 in the figure is turned on, C0 is reset, its corresponding bit storage unit is set to 0, the normally open contact of C0 is disconnected, and the normally closed contact point is turned on, and its current counter value is set to 0 at the same time.
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120 120  X2 provides a counting input signal. When the reset input circuit of the counter is disconnected and the counting input circuit changes from disconnected to connected (that is, the rising edge of the counting pulse), the current value of counter C0 is increased by 1. After 10 count pulses, the current value of C0 is equal to the set value of 10, and its corresponding bit storage unit is set to 1, and the Y0 contact is turned on at this time. When counting pulses again, the current value does not change until the reset input signal is turned on, and the current value of the counter is set to 0.
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206 206  
207 207  == Decimal constant (K) ==
208 208  
209 -“K” is a Sign that represents a decimal integer and is specified by K£ (for example: K123). It is mainly used to designate the set value of a timer or counter or the value in the operand of an application instruction. In 16bit instructions, the value range of constant K is -32768 to 32767; in 32bit instructions, the value range of constant K is -247483648 to 2147483647.
209 +“K” is a Sign that represents a decimal integer and is specified by K£ (for example: K123). It is mainly used to designate the set value of a timer or counter or the value in the operand of an application instruction. In 16bit instructions, the value range of constant K is -32768 to 32767; in 32bit instructions, the value range of constant K is -2147483648 to 2147483647.
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211 211  == Hexadecimal constant (H) ==
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223 223  
224 224  == String constant ==
225 225  
226 -The character string constant is the device that specifies the character string, and only supports the ASCII code character set, and any character string ends with a NULL character (00H). To use string devices, you must use double eye marks to modify the characters, as follows to convert the string to ASCII characters and fill in the device starting with D0:
226 +The character string constant is the device that specifies the character string, and only supports the ASCII code character set, and any character string ends with a NULL character (00H). To use string devices, you must use double quotation marks to modify the characters, as follows to convert the string to ASCII characters and fill in the device starting with D0:
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228 228  (% style="text-align:center" %)
229 229  [[image:02(1)_html_61bdd1807e91322f.png||class="img-thumbnail"]]