旋轉(zhuǎn)編碼器是一種光電式旋轉(zhuǎn)測量裝置，它將被測的角位移直接轉(zhuǎn)換成數(shù)字信號（高速脈沖信號）。
　　編碼器如以信號原理來分，有增量型編碼器，型編碼器。
　　我們通常用的是增量型編碼器，可將旋轉(zhuǎn)編碼器的輸出脈沖信號直接輸入給PLC，利用PLC的高速計(jì)數(shù)器對其脈沖信號進(jìn)行計(jì)數(shù)，以獲得測量結(jié)果。不同型號的旋轉(zhuǎn)編碼器，其輸出脈沖的相數(shù)也不同，有的旋轉(zhuǎn)編碼器輸出A、B、Z三相脈沖，有的只有A、B相兩相，zui簡單的只有A相。
　　編碼器有5條引線，其中3條是脈沖輸出線，1條是COM端線，1條是電源線（OC門輸出型）。編碼器的電源可以是外接電源，也可直接使用PLC的DC24V電源。電源“-”端要與編碼器的COM端連接，“+ ”與編碼器的電源端連接。編碼器的COM端與PLC輸入COM端連接，A、B、Z兩相脈沖輸出線直接與PLC的輸入端連接，A、B為相差90度的脈沖，Z相信號在編碼器旋轉(zhuǎn)一圈只有一個脈沖，通常用來做零點(diǎn)的依據(jù)，連接時要注意PLC輸入的響應(yīng)時間。旋轉(zhuǎn)編碼器還有一條屏蔽線，使用時要將屏蔽線接地，提高抗干擾性。
　　編碼器-----------PLC
　　A-----------------X0
　　B-----------------X1
　　Z------------------X2
　　+24V------------+24V
　　COM------------- -24V-----------COM[1]
SGDB-15ADG
SGDB-30ADG
SGMG-05A2AC
SGMG-09A2AC
SGMG-13A2AC
SGMG-09ASACB
SGMP-08A314
SGMGH-13ACA61
SGMAS-01ACA21 
SGMAH-A5AAA41 
SGMAH-04AAA41 
SGDM-04ADA 
SGMCS-02B3B11
SGMAV-04ADA21
SGMAH-08AAA4C 
SGMGH-44ACA6C 
JUSP-NS600
SGMDH-12A2A-YR13
SGMGH-09A2A21
SGDA-A3CPY14
SGM-A3C3CN21
TRD-Y2048
SGDL-04AP
SGMGH-20ACA61 
SGDB-20ADG 
SGM-04A312 
SGDM-A5ADA
SGMAH-A5AAA41
CIMR-G5A4015
SGDM-08ADA
SGMAS-C2A2A6C
CIMR-VB4A0005BBA 
SGDV-R90A01b
SGDV-R90A01a
SGMJV-01ADC6S
SGMPH-04A1A-YR12 
SGMPH-04A1A-YR11
SGMAH-A5AAA21 
SGDM-01ADA
SGMAS-A5ACA21 
SGMAS-A5ACA2C
SGMAH-01BAA61
CDBR-4030B
SGMGH-09ACA6C
SGM-A5A3G46 
SGML-04AF14
SGMJV-01ADA21
SGM-08V312
SGMAS-02ACA21
SGMAS-04ACA21
SGMAS-08ACA21
SGMG-20A2ABC
SGDM-20ADA 
SGMGH-13ACA6C
SGDM-15ADA 
SGMG-30A2BB   
SGDS-02A01A 
SGMAH-C2ACA41
SGDV-330A11A
SGM-A5A312 
SGM-A3B5SW11 
SGM-04AW12 
CM200YE4-12F
ETP617184
CM10YE13-12H
JUSP-OP02A
SGMAH-A8B1A-YB11
SGM-01A3NT14
SGMP-08AWYR12
SGMP-04AXS
SGDV-120A21A 
SGDA-A3BP 
JEPMC-MP2300N
SGMPH-02A1A-YR31
SGMAH-01AAF41
SGMAH-08AAA41   
SGDV-R90A01A
SGMAH-04AAA4C--機(jī)電之家
SGDA-A5AP
SGDA-01AP
SGDA-02AP
SGDA-04AP
SGMGH-20ACA6C  
SGMSH-50ACA61 
SGMAH-01AAA2C
SGDH-08AE 
SGMAH-08AAA21 
SGML-01AF12
SGMDH-22ACA61
SGMG-44ASAAB 
SGMPS-04ACA21 
SGMAV-04ADA2C
SGMGH-44ACA61
TRDY-1024
SGMG-20AW
SGMG-30AW
SGMG-44AW
SGMG-75AW
SGD-02AP
SGM-02A312
SGDV-2R8A01A
SGMJV-04ADA21
SGMAS-C2ACA41 
SGMAS-C2ACA21 
SGM-08A3G14B
SGMJV-08ADA2C 
SGDV-7R6A01A 
SGMJV-08AAA61
SGMAH-A3BAA21 
SGMAH-A5A1F-YA11
SGMAS-A5A2A21
SGMPS-01ACA21
SGDM-02ADA
SGDA-04AS
SGDM-50ADA 
SGDA-01AS
SGM-02B312
HI-15E2TCU
SGMAH-02A1A21
SGME-08AF12 
SGME-08AF14
SGDE-02BP
SGDL-02AS
SGMGH-09ACA61 
SGMAH-01AAA21
SGMSH-20ACA61 
SGMPH-01A1A-YR21
SGMAH-A8A1A-YR11
SGMAH-A8A1A-YB11
SGMAS-01ACA4B
SGMG-30AWABF
SGMAS-04A2A21
MR-J2S-20A
SGMJV-01A3A21
SGMJV-01A3A61
SGMGH-30ACA61
SGMGH-30ACA6C 
SGMGH-05ACA61 
SGMPH-15A1A-YR11
SGM-08A3ST13
SGDA-08AP
SGMGH-1EACA61
JUSP-RG08C
SGMAH-A5A1G12B
SGMVH-3GA2B6B
SGD-01BP
SGDA-04ASY238
SGMAS-04AGA-SU21
SGM-01AWSU12
SGMG-20AWABF
SGM-02A3SN11
SGML-A5AF14
SGMG-05A2A 
SGMP-02AWYR12
SGDE-02AP
SGM-08A312
SGM-A5A312B 
SGDM-30ADA 
SGMAH-02AAA41
R7D-AP08H
R7M-A75030-S1
SGMGH-06ACB21
SGDS-01A12A
SGDA-01BP
SGDA-01ASY238
SGMPS-04A2A41
SGMAH-A5AAF41D
SGMAH-02AAF41
SGMAH-Q1AAF41
SGM-02A3YB11
SGMAH-08BAA4C
SGMAH-A5A1A-YBH
SGMAH-08AAF2C
SGMAH-08AAF41
SGMPH-04AAAG12B
SGDS-01A01A
SGMAH-A5AAAAC
SGM-01A312
SGM-08AW14B
SGMGH-1AACA61 
SGMG-10A6A
SGMG-30A6A
SGMG-75A6A
SGMG-13A2A
SGMG-13AWA-HL11
SGDL-04AS
SGDE-04AS
SDGL-01AP
SGDV-200A15A----
SGMG-13ASAB
SGMG-55AWABF
SGMG-1AAWABF
SGDM-10ADA  
SGMGH-09ACB2C
SGM-02A314
SGM-08A3G26
SGM-01A314C
SGMAH-A3ABA21
SGM-02A3MA31 
SGD-02BP
SGMAS-12ACA21
SGM-A5A314
SGDA-02AS
SGM-08A314 
SGMPH-01AAA2C
SGMG-20A2A
SGDM-10ADA
SGMGH-03A2A31
SGM-04U312
SGMAS-04ACAB1
SGM-A5AWSU12
SGMG-10AWABF
SGMP-01AW16S 
SGMP-02AW16S 
SGM-08A3FJ53 
SGM-A3C3NQ11
SGDS-04A01A
SGDS-01F01A
SGMSH-10ACA61
SGMSH-20ACA21 
SGMGV-13d8a2C
SGDF-A1CP 
SGMSS-25ACA21
SGMSH-10ACA61
SGMAH-08A1A61D-0Y
SGMAH-08AAAHB61
SGMSH-10ACA6C
SGMPH-01A1A21
JUSP-OP03A
SGMBH-3ZACA21
SGMG-44A2A
SGMG-30A2AAB
SGMG-44A2A-AM12
SGMGH-55ACA61
SGMG-75A2A
SGMDH-12A2A-YR12 
SGMSH-70A2A-FJ12
SGDB-44ADG
SGMG-30A2A
SGMGH-03A2A31
SGDP-01APA
HC-BH0336L-S4
HC-BP0136D-S1
SGDP-02APA
SGMAH-02A1A-AD21
SGMEH-02AAA21 
SGDP-02APA-Y108
SGDP-08BP 
SGD-02AN
SGMAH-04AAAHB2C
RYS201S3-LSS6-ZD7 
SGMPH-04AAA61
SGMPH-15AAA21
SGMAH-04AAAGB6C
SGDP-04APA
SGM-01A3NT11
SGM-A5A3NT11
SGMP-04A3NT11 
SGMP-04A3NT12
SGDA-04AP 
SGMAH-04AAA6C
SGDA-A3AP
SGM-A3A312 
SGDA-04VP
SGDA-08AS
SGDS-A5A12A
SGDS-08A15A
SGDS-A3A12A
SGDS-01A71A
SGDV-R90A11A
SGDV-2R8A11A
SGML-04AF14C
SGML-08AF14C
SGMAV-08ADA21
SGMAV-10ADA21
SGMAV-A5ADA61 
SGMG-05A2AB
SGM-08A312B
SGMPH-08ABA21
SGMAS-A5A2A21-Y2
SGML-02AF14
SGMAH-04AAA2C 
SGMAH-04AAA4C  
SGDH-02AE
SGMAH-04ABA41
SGMP-08A312 
SGMP-08A312B
SGM-08A3FJ43 
SGM-08AAFJ11
SGM-08A3TE12
SGMP-01A312 
SGMP-02A312
SGMP-04A312
SGMP-01A316
SGDA-08APY61
SGMP-08A314B
SGMP-04A314
SGMP-08AWYR42 ---機(jī)電
SGMP-08A314
SGMP-15A312
SGD-08AP
SGMP-15A312B 
SGDA-A5AS------模具
SGMPH-04A2A-YR11
SGDJ-01AP
CIMR-V7AT21P5 
SGDL-A5AP 
SGDH-01AE-N3Y900
SGDH-04AE
SGDH-01AE
SJDE-01APA 
SGDH-A5AE
SGDH-10AE
SGDH-A3AE
SGDH-04AE-S
SGDH-08AE-S 
SGDV-5R5A01A
SGMJV-08ADD6E 
SGMJV-08AAA6C 
SGDE-01AP
CM300DXD-24A 
SGDL-08AP 
SGDS-02A05A
SGDE-08AS
SGDE-08AP
SGDL-08AS
SGD-08APY61
SGD-04APY61 
SGMAS-02ACA21 
SGML-08AF12
SGDH-20AE
SGDV-200A01A
CIMR-V7AA43P7 
SGMJV-04ADA61 
SGMAS-06ACA21
SGDS-04A12AY511 
SGMAS-04A2A2C
SGDM-04AC-SD2 
SGDM-04AC-SD2A
SGDM-08AC-SD2BM
SGM-08A314C
SGM-08A312C 
SGM-08V314C
SGmAH-04AAA21
SGMAH-04AAA21D-OY
SMGPS-01ACA21
SGMPS-02ACA21
SGMAH-08A1A21  
SGMPS-01A2A21 
SGM-A5AGSU11
SGM-04A312B 
B63D5702H8
SGMAH-01AAA41
SGMP-01AW12
SGMSH-20ACA21 
JUSP-NS200
SGDB-15ADP 
SGMP-15A314
SGDB-15ADPY8
SGDB-15ADP-P 
SGDB-15ADP-R
SGDB-30ADG-P
SGDB-15VD 
SGDB-15ADM
SGDB-15AD
SGDV-2R1F01A
SGMS-10A6AB
SGDB-10ADS
SGMS-20A6AB
SGDS-01A01A
SGDM-08ADA
SGMGV-13ADC61
SGDV-120A01A
SGMPH-02A2A-YR21
SGMP-15A3TE11
SGMG-1AA2A
SGMAS-04ACA2C
SGDS-A5A01A
SGDS-A5A05A
SGDS-04A105A
SGDS-15A01A
SGDS-05A12A
SGDS-04A12A
SGMAS-04ACA21
SGMAS-04ACA41
SGMAS-04ACA61
SGDB-05AD
SGDB-05ADG
SGDB-03ADG
SGDB-20AD
RYS201S3-VVS-ZA2
RYS401S3-VVS-ZA2
RYS751S3-VVS-Z72
RYS401S3-LSS-Z59
RYS401S3-VVS
RYS401S3-VVS-Z6
RYS101S3-VVS 
RYS201S3-VVS
SGD-A3AP
ESB-YSB202ABC00
YSB2020KN001
SG-30A 
130SY-M07725 
ADMA-08LA111
ADA2-08LS
SGD-A5AP 
SGD-01AP  
SGD-04AP  
SGD-A3AS 
SGD-A5AS 
SGD-01AS 
SGD-02AS