DTCC901B 61430001-FU控制器模块备件可编程PLC备件卡件模块
DTCC901B DCC2390A 3EST49-116 3BSC980006R15261430001-FU卡件模块PLC备件
PLC在进行输入输出处理、模拟量控制、位置控制时，需要许多数据寄存器存诸数据和参数。数据寄存器为16位，最高位为符号位。可用两个数据寄存器来存储32位数据，最高位仍为符号位。数据寄存器有以下几种类型:1.通用数据寄存器(D0~D199)共200点。当M8033为ON时，D0~D199有断电保护功能;当M8O33为OFF时如它们无断电保护，这种情况PLC由RUN-STOP或停电时，数据全部清零。2断电保持数据寄存器(D200~-D79)共7800点，其中D200~D511(共12点)有断电保持功能，可以利用外部设备的参数设定改变通用数据寄存器与有断电保持功能数据寄存器的分配;D490 ~D509供通信用;D512~D79的断电保持功能不能用软件改变，但可用指令清除它们的内容。根据参数设定可以将D10O0以上做为文件寄存器。3.特殊数据寄存器(D8000~D8255)共256点。特殊数据寄存器的作用是用来监控PLC的运行状态。如扫描时间、电池电压等。未加定义的特殊数据寄存器，用户不能使用。具体可参见用户手册。4.变址寄存器(VZ)三菱FX2N系列PLC有VO~VT和Z0~Z7共16个变址寄存器，它们都是16位的寄存器。
DTCC901B 61430001-FU Controller Module Spare Parts Programmable PLC Spare Parts
DTCC901B DCC2390A 3EST49-116 3BSC980006R15261430001-FU
When PLC performs input and output processing, analog control, and position control, it requires many data registers to store data and parameters. The data register is 16 bits, with the highest bit being the sign bit. Two data registers can be used to store 32-bit data, with the highest bit still being the sign bit. There are several types of data registers: 1. General data registers (D0~D199) with a total of 200 points. When M8033 is ON, D0~D199 have power-off protection function; When M8O33 is OFF and there is no power outage protection, in this case, the PLC will reset all data to zero by RUN-STOP or power outage. The 2 power-off hold data registers (D200~- D79) have a total of 7800 points, of which D200~D511 (12 points in total) have power-off hold function. The allocation of general data registers and power-off hold function data registers can be changed using the parameter settings of external devices; D490~D509 Supply and Communication Credit; The power-off hold function of D512~D79 cannot be changed by software, but their contents can be cleared with instructions. According to the parameter settings, D10O0 and above can be used as file registers. 3. Special data registers (D8000~D8255) have a total of 256 points. The function of special data registers is to monitor the operating status of PLCs. Such as scanning time, battery voltage, etc. Undefined special data registers cannot be used by users. Please refer to the user manual for details. 4. Index Registers (VZ) Mitsubishi FX2N series PLCs have a total of 16 index registers, VO~VT and Z0~Z7, all of which are 16 bit registers. The index register V/is actually a special purpose data register that functions like an index register variable in a microcomputer, used to change the number (index) of components. For example, if V0=5, when executing D20VO, the number being executed is D25 (D20+5). The index register can be read and written like other data registers. When 32-bit operations are required, V and Z can be used in series (Z is the low bit, V is the high bit).
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