程序是整个自动控制系统的“心脏”，程序编制的好坏直接影响到整个自动控制系统的运作。编程器及编程软件有些厂家要求额外购买，并且价格不菲，这一点也需考虑在内。
一种是使用厂家提供的专用编程器。也分各种规格型号，大型编程器功能完备，适合各型号PLC，价格高；小型编程器结构小巧，便于携带，价格低，但功能简单，适用性差；另一种是使用依托个人电脑应用平台的编程软件，现已被大多数生产厂家采用。各生产厂家由于各自的产品不同，往往只研制出适合于自己产品的编程软件，而编程软件的风格、界面、应用平台、灵活性、适应性、易于编程等都只有在用户亲自操作之后才能给予评价。
编程语言为复杂，多种多样，看似相同，但不通用。常用的可以划分为以下5类编程语言：
这是PLC厂家采用多的编程语言，初是由继电器控制图演变过来的，比较简单，对离散控制和互锁逻辑为有用；
（2）顺序功能图
它提供了总的结构，并与状态定位处理或机器控制应用相互协调；
（3）功能块图
它提供了一个有效的开发环境，并且特别适用于过程控制应用；
（4）结构化文本
这是一种类似用于计算机的编程语言，它适用于对复杂算法及数据处理；
（5）指令表
CACR-SR05AC1ESY105 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR05AB1ER Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR05AA2AH Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR05AC1ER Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR05BB1AFY114 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR05BB1AF Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR05BY1SG-E Yaskawa Yasnac AC Servo Drive ServoPac
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CACR-SR05SB1AFY114 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR05BE13SY44 Yaskawa Yasnac AC Servo Drive ServoPa
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CACR-SR05BE12G-E Yaskawa Yasnac AC Servo Drive ServoPac
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CACR-SR05BB1BF Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR05SB1AF Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR05BC1ES-Y278 Yaskawa Yasnac AC Servo Drive Servo
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CACR-SR05SB1AFY187 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR05BC1CS-Y159 Yaskawa Yasnac AC Servo Drive Servo
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YASKAWA SERVO MOTOR DRIVE- CACR-HR10BB NIB CACRHR10BB
One-day shipping available
YASKAWA YASNAC CIMR MT II 7.5K SPINDLE DRIVE
Yaskawa Varispeed 626VM3 Spindle Drive CIMR-VMS20110-PX
Yaskawa Yasnac CACR-SR44SB1AFY307 AC Servo Drive Servo
CACR-HR05BAB11 Yaskawa Yasnac AC Servo Drive ServoPack
One-day shipping available
CACR-SR03SZ1SSY106 Yaskawa AC Servo Drive Unit
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CACR-SR03SZ1SSY223 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-SR03SZ1SSY84 Yaskawa Yasnac AC Servo Drive ServoPa
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CACR-SR03AB2ER Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR03SZ1SSY215 Yaskawa Yasnac AC Servo Drive ServoP
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CACR-PR03AC4ER Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-PR03BC3CSY54 Yaskawa Yasnac AC Servo Drive ServoPa
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CACR-SR03AA2AH Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR03BE12G Yaskawa Yasnac AC Servo Drive ServoPack
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CACR-SR03SB1AFY187 Yaskawa Yasnac AC Servo Drive ServoP
One-day shipping available
CACR-SR03BE12F-E Yaskawa Yasnac AC Servo Drive ServoPac
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CACR-SR03BE12G-E Yaskawa Yasnac AC Servo Drive ServoPac
One-day shipping available
CACR-SR03SZ1SSY109 Yaskawa Yasnac AC Servo Drive ServoP
One-day shipping available
CACR-SR03SZ1SSY318 Yaskawa Yasnac AC Servo Drive ServoP
One-day shipping available
Yaskawa Drive Servopack CACR-SR44BE12G CACRSR44BE12G-E
Yaskawa / Magnetek CIMR-G3U45P5 7.5HP 460V AC Drive G3
One-day shipping available
Yaskawa / Magnetek CIMR-G5M2022 30HP 230V AC Drive G5
One-day shipping available
CACR-SR02BY1SG-E Yaskawa Yasnac AC Servo Drive ServoPac
One-day shipping available
CACR-SR02AZ1SR-Y2 Yaskawa Yasnac AC Servo Drive ServoPa
One-day shipping available
CACR-SR02BE13SY44 Yaskawa Yasnac AC Servo Drive ServoPa
One-day shipping available
CACR-SR02BE12G-E Yaskawa Yasnac AC Servo Drive ServoPac
One-day shipping available
CACR-SR02AC1ER Yaskawa Yasnac AC Servo Drive ServoPack
One-day shipping available
Yaskawa AC servo drive motor USASEM-30YRW11 fanuc NEW
YASKAWA SERVO DRIVE (CONTROLLER) CACR-SR10SZ1SFY221
NEW YASKAWA 7.5 HP AC VFD DRIVE CIMR-P7U45P5 P7BVB011J
YASKAWA SERVOPACK DRIVE SGDM-75AC-PY389
Yaskawa AC servo drive motor USASEM-03YRS21 03YRS22 NEW
Yaskawa C21-B20V Frequency Drive (ESC1078)
YASKAWA CACR-IR15SFB SERVO DRIVE CACRIR15SFB
Expedited shipping available
REPAIR CDMR-MR-15K Yaskawa DC Drive Varispeed 505
One-day shipping available
REPAIR CDMR-MR-22K Yaskawa DC Spindle drive Varispeed 5
One-day shipping available
REPAIR CDMR-MR-11K Yaskawa DC Spindle drive Varispeed 5
One-day shipping available
