AS Series Operation Manual
5-12
*1: ASCII code chart
Hex 0 1 2 3 4 5 6 7 8 9 A B C D E F
Hex 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
ASCII
Hex 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F
ASCII SP ! " # $ % & '
（ ）
* +
，
- . /
Hex 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
ASCII 0 1 2 3 4 5 6 7 8 9
：
; < = > ?
Hex 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F
ASCII @ A B C D E F G H I J K L M N O
ASCII P Q R S T U V W X Y Z
Hex 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F
ASCII ` a b c d e f g h i j k l M n o
Hex 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
ASCII p q r s t u v w x y z { | } ~
Note: represents an invisible character. Please do not use it.
5.2.4 Input Relays (X)
Input function
The input is connected to the input device (external devices such as button switches, rotary switches, and
number switches), and PLC reads the input signal. You can use input contact A or contact B several times
in the program, and the ON/OFF input state varies with the ON/OFF input device state.
Input number (the decimal number):
For the PLC, the input numbers start from X0.0. The number of inputs varies with the number of inputs on
the digital input/output modules. The inputs are numbered according to the order in which the digital
input/output modules are connected to the CPU module. The maximum number of inputs for the PLC is
8192, and the input number range is between X0.0 and X511.15.
Input type: Inputs are classified into two types.
1. Regenerated inputs: PLC reads the state of a regenerated input before the program is executed. For
example, LD X0.0.
2. Direct input: The state of a direct input is read by the PLC during the execution of the instructions. For
example, LD DX0.0.
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