PLC是由摸仿原继电器控制原理发展起来的,二十世纪七十年代的PLC只有开关量逻辑控制,首先应用的是汽车制造行业。它以存储执行逻辑运算、顺序控制、定时、计数和运算等操作的指令;并通过数字输入和输出操作,来控制各类机械或生产过程。用户编制的控制程序表达了生产过程的工艺要求,并事先存入PLC的用户程序存储器中。运行时按存储程序的内容逐条执行,以完成工艺流程要求的操作。PLC的CPU内有指示程序步存储地址的程序计数器,在程序运行过程中,每执行一步该计数器自动加1,程序从起始步(步序号为零)起依次执行到较终步(通常为END指令),然后再返回起始步循环运算。PLC每完成一次循环操作所需的时间称为一个扫描周期。不同型号的PLC,循环扫描周期在1微秒到几十微秒之间。PLC用梯形图编程,在解算逻辑方面,表现出快速的优点,在微秒量级,解算1K逻辑程序不到1毫秒。它把所有的输入都当成开关量来处理,16位(也有32位的)为一个模拟量。大型PLC使用另外一个CPU来完成模拟量的运算。把计算结果送给PLC的控制器。
MAC112C-0-ED-2-?C/130-A-0/S005
MAC093B-0-0S-3-?C/130-A-0/S001
MAC112D-2-HD-3-?C/130-A-O/S05
MAC112D-0-ED-4-?C/130-A-0/WI520?LX/S005
MAC90A-0-RD-4C/?130-A-0/WI52Q/S?011
MAC112D-0-FD-4-?C.130A-0.WI520X?.S005
MAC112D-HD-3-C.?130A-0.S005 Used
MAC112D-0-E0-4-?C/130-A-0/WI520?LX/S005
MAC112D-2-HD-3C/13?0-A-0
MAC112D-0-ED-4-?C/130-A-1/WI520?LV/S005
MAC112D-0ED-4-C?/130-A-0/WI520L?V/S005
MAC112C-2-ED-4-?C/130-A-2/WI520?LV/S018
MAC112D-0-ED-3-?C/130-A-2/S018
MAC112D-0-ED-1-B/1?30-A-0/J625/S05
MAC112C-0-HD-4-?C/130-A-0/WI520?LX/S005
MAC112C-0-ED-4-?C/130-A-0/WI520?LV/S005
MAC112D-0-ED-1-C/1?30-A-0/S05/J625
MAC112C-0-HD-3-?C/130-B-0/S005
MAC112D-0-ED-4-?C/130-B-2/WI522?LV/S018
MAC112C-0-ED-4-?C/130-A-0/WI520?LV/S005
MAC90C-0-GD-3C/?110-A-O-S001
MAC112C-1-HD-3-C/1?30-A-0
MAC112D-O-ED4
INDRAMAT MHD093C-035-NG0?-AN AC SERVO MOTOR
Rexroth Indramat MHD 71 Motor With Encoder
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REXROTH INDRAMAT MHD093C-058-PG0?-BA NEW MHD093C058PG0BA
Bosch Indramat Permanent Magnet Motor MHD090 Alternator
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Rexroth Indramat Magnet Motor MHD071B-061-PP0?-UN
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INDRAMAT MHD093B-035-PP0?-AN AC SERVO MOTOR
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MHD071B-061-PG0?-UN INDRAMAT SERVO
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INDRAMAT SERVO MOTOR MHD093B-035-NP1?-AA
Indramat Servo Motor MHD115A-058-PP1?-AN Used
MHD112B-024-PG1?-BN INDRAMAT
INDRAMAT MHD093C-058-NG0?-AN PERMANANT MAGNET MOTOR USED
Indramat Servo Motor Model MHD112C-024-PP0?-BN Used
Rexroth Indramat PM Motor MHD093B-035-PGO?-AA
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INDRAMAT MHD093B-035-NP1?-AA NSFP MHD093B035NP1AA
INDRAMAT SERVO MOTOR MHD093B-035-PG0?-AN
INDRAMAT SERVO MOTOR MHD112B-024-PP0?-LN
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INDRAMAT SERVO MOTOR MHD093B-035-NP0?-AN
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