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三菱FX2N PLC简介及编程元件的地址
扩展规则
基本单元的右侧A部可接FX2N系列用的扩展单元、扩展模块,此外,还可接FXON、FX1,FX2N系列等多台扩展设备。各个系列的扩展设备组合如下:
a种扩展方式

b种扩展方式

FX2N基本单元的右侧,可以按“a种扩展方式”或“b种扩展方式”进行扩展。但是,用“b种扩展方式”时,一定须用FX2N-CNV-IF型转换电缆,且一旦用了“b种扩展方式”之后,就不能再用“a种扩展方式”的扩展设备了。

(在讲解指令之前,先介绍一下与用户编程有直接关系的PLC编程元件的地址分配问题。)
FX2N 系列PLC性能规格
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项 目 |
FX2N系列 |
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运算控制方式 |
存储程序反复运算方式(专用LSI)、中断命令 |
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输入输出控制方式 |
批处理方式(执行END指令时),但是,有I/O刷新指令 |
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程序语言 |
符号语言 + 梯形图 (可用SFC表示) |
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程序存储器 |
***大存储容量 |
16K,(含注释文件寄存器***大16K),有键盘保护功能 |
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程序存储器 |
内置存储器容量 |
8K步,RAM(内置锂电池后备) 电池寿命:约5年,使用RAM卡盒约3年(保修期1年) |
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可选存储卡盒 |
RAM 8K(也可自配16K) / EEPROM 4K,8 K / 16K / EPROM 8k(也可匹配16K)步 不能使用带有实时锁存功能存储卡盒 |
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指令种类 |
顺控***梯形图 |
顺控指令27条,步进梯形图指令2条 |
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应用指令 |
128种 298条 |
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运算处理速度 |
基本指令 |
0.08μs/指令 |
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应用指令 |
1.52 ~ 数100μs / 指令 |
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I/O点数 |
输入点数(有扩展模块时) |
X000 ~ X267 184点(8进制编号) |
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输入点数(有扩展模块时) |
Y000 ~ Y267 184点(8进制编号) |
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I/O总点数(有扩展模块时) |
256点 |
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辅助继电器 |
* 一般用 |
M 0 ~ M 499 500点 |
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** 保持用 |
M 500 ~ M1023 524点 |
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*** 保持用 |
M1024 ~ M3071 2048点 |
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特殊用 |
M8000 ~ M8255 156点 |
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状态寄存器 |
初始化 |
S 0 ~ S 9 10点 |
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* 一般用 |
S 10 ~ S 499 500点 |
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** 保持用 |
S500 ~ S 899 400点 |
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*** 信号用 |
S900 ~ S 999 100点 |
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定时器 (限时) |
100ms |
T 0 ~ T 199 200点 (0.1 ~ 3276.7 秒) |
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10ms |
T 200 ~ T 245 46点(0.01 ~ 327.67秒) |
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*** lms乘法型 |
T 264 ~ T 249 4点 (0.001 ~ 32.767秒) |
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*** 100ms乘法型 |
T 250 ~ T 255 6点 (0.1 ~ 3276.7秒 ) |
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计数器 |
* 16位向上 |
C 0 ~ C 99 100点(0 ~ 32767计数器) |
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** 16位向上 |
C 100 ~ C199 100点(0 ~ 32767计数器) |
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* 32位双向 |
C 200 ~ C 219 20点(-2,147,483,648~+2,147,483,647计数器) |
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** 32位双向 |
C 220 ~ C 234 15点(-2,147,483,648~+2,147,483,647计数器) |
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** 32位高速双向 |
C235 ~ 255中的6点(响应频率参见5-3项) |
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数据寄存器 (使用1对时为32位) |
* 16位通用 |
D 0 ~ D199 200点 |
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** 16位保持用 |
D200 ~ 511 312点 |
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*** 16位保持用 |
D512 ~ D7999 7488点 (D1000以后可以500点为单位设置文件寄存器) |
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16位保持用 |
D8000 ~ D8159 106点 |
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16位保持用 |
V0-V7,Z0-Z7 16点 |
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指针 |
JAMP,CALL分支用 |
P 0 ~ P 127 128点 |
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输入中断,计时中断 |
I0□□ ~ I8□□ 9点 |
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计数中断 |
I010 ~ I060 6点 |
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嵌套 |
主控 |
N 0 ~ N 7 8点 |
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常数 |
10进制(K) |
16位: -32,768 ~ +32,767 32位: -2,147,483,648 ~ +2,147,483,647 |
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16进制(H) |
16位:0-FFFF 32位:0-FFFFFFFF |
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* 、非 掉 电 保 护 区 : 通过参数设置可变为掉电保护区(电池)。
** 、掉 电 保 护 区(电池) : 通过参数设置可以改为非掉电保护区。
***、掉电保护固定区(电池) : 区域特性不可改变。
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