User manual AMX AXCESS CONTROL SYSTEM PROGRAM

[. . . ] instruction manual Axcess Programming Language So ftw are AMX Limited Warranty and Disclaimer AMX Corporation warrants its products to be free of defects in material and workmanship under normal use for three (3) years from the date of purchase from AMX Corporation, with the following exceptions: · · · · · Electroluminescent and LCD Control Panels are warranted for three (3) years, except for the display and touch overlay components that are warranted for a period of one (1) year. Disk drive mechanisms, pan/tilt heads, power supplies, MX Series products, and KC Series products are warranted for a period of one (1) year. Unless otherwise specified, OEM and custom products are warranted for a period of one (1) year. Software is warranted for a period of ninety (90) days. [. . . ] Unlike relational operators, logical operators can appear more than once in an expression. For example: X=2 Y=7 Z = 12 IF ((X = 2) AND (Y > 4) OR (Z <= 8)) { (* Statement 1 *) } Since the operators AND and OR have the same precedence, AND is evaluated first since it appears first. Both (X = 2) and (Y > 4) are true, so the result of this part of the expression is true. If you treat this part as one unit, you can see its result is actually the first condition of the OR operator. Although the second condition (Z <= 8) is false, the entire expression is true since OR requires only one condition to be true. Refer to the Precedence Among Operators section on page 51 for more information. Bitwise Operators Bitwise operators perform the same logical operations mentioned earlier, but on a bit-by-bit basis. These operators are BAND, BOR, BXOR, and BNOT. For example, the keyword BAND performs a logical AND operation between two bytes on a bit-by-bit basis. Instead of producing a true or false result, bitwise operations form a new byte. For example: X = $A1 BAND $8A The variable X now equals $8Ø (see FIG. The AND operation is applied to the first bit of each value (1 and 1), setting the first bit of the result to 1. This is done again for each bit of the values, producing a new byte. FIG. 16 BAND applies the logical operator And on a bit-by-bit basis. Since both bits are true in the first location, the resulting bit is also true. 50 Axcess Programming Language Operators Abbreviations Instead of typing AND and BNOT in your programs, you can use some abbreviations for the logical and bitwise operators. For example, the characters && can take the place of AND, and ~ can replace BNOT. Use the method you are comfortable with; one way is easier to read; the other is faster to type. The following table lists the supported logical and bitwise operators. Logical and Bitwise Operator Abbreviations Abbreviation Function && || ^^ !Logical And Logical Or Logical Xor Logical Not Abbreviation Function & | ^ ~ Bitwise And (Band) Bitwise Or (Bor) Bitwise Xor (Bxor) Bitwise Not (Bnot) Precedence Among Operators There is an order of precedence among the operators, as shown below. Operators with higher precedence are evaluated first. For example, multiplication operations (*) are performed before the BAND bitwise operation. Operator Precedence Level 1 (highest) 2 3 4 5 6 (lowest) Operators Not, Bnot * + < / <= > >= = <> % Band, Bor, Bxor And, Or, Xor If the operators are in the same level of precedence, the equation is solved from left to right. [. . . ] Enter your user information in the How to Log On section: 4. If you have an account on the AMX BBS: a. Enter your AMX BBS user name in the User ID field c. Enter your AMX BBS password in the Password field 5. [. . . ]