MVME2700-3361怎么使用工控系统PLC/DCS模块卡件备件设备

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产品详情

产品标题: MVME2700-3361怎么使用工控系统PLC/DCS模块卡件备件设备

型号：MVME2700-3361

品牌：MOTOROLA

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产品详情资料：

MVME2700-3361

表达式作为参数表达式可以是由算术运算符分隔的一个或多个数值：加（+）、减（-）、乘（*）、除（/）、逻辑AND（&）、左移（<<）或右移（>>）。数值可以用十六进制、十进制、八进制或二进制表示，方法是在它们前面加上适当的基标识符。如果未***基标识符，则假定数值为十六进制。数值也可以用最多四个字符的字符串文字表示。字符串文本必须以单引号（&＃39;）开头和结尾。数值被解释为字符的ASCII值的串联。此值是右对齐的，与任何其他数值一样。表达式的求值总是从左到右，除非使用括号对表达式的一部分进行分组。没有运算符优先级。首先计算括号内的子表达式。嵌套的括号子表达式是从内到外计算的。

产品英文详情料:

Expression as a Parameter An expression can be one or more numeric values separated by the arithmetic operators: plus (+), minus (-), multiplied by (*), divided by (/), logical AND (&), shift left (<<), or shift right (>>). Numeric values may be expressed in either hexadecimal, decimal, octal, or binary by immediately preceding them with the proper base identifier.If no base identifier is specified, then the numeric value is assumed to be hexadecimal.A numeric value may also be expressed as a string literal of up to four characters. The string literal must begin and end with the single quote mark (&＃39;). The numeric value is interpreted as the concatenation of the ASCII values of the characters. This value is right-justified, as any other numeric value would be.Evaluation of an expression is always from left to right unless parentheses are used to group part of the expression. There is no operator precedence. Subexpressions within parentheses are evaluated first. Nested parenthetical subexpressions are evaluated from the inside out.