編碼器如以信號原理來分，有增量型編碼器，絕對型編碼器。
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的高速計數(shù)器對其脈沖信號進行計數(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，最簡單的只有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。
ALLEN BRADLEY 202-BAH92 (Surplus New In factory packaging)
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裝備INDEXER功能型伺服驅(qū)動器SGDV330AE1A002000101
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE1A002000500
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE1A002000501
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE1A002000600
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE1A002000601
裝備INDEXER功能型伺服驅(qū)動器SGDV330AE5A000000100
裝備INDEXER功能型伺服驅(qū)動器SGDV330AE5A000000101
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE5A000000500
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE5A000000501
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE5A000000600
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE5A000000601
裝備INDEXER功能型伺服驅(qū)動器SGDV330AE5A002000100
裝備INDEXER功能型伺服驅(qū)動器SGDV330AE5A002000101
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE5A002000500
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE5A002000501
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE5A002000600
裝備DeviceNet通信功能型伺服驅(qū)動器SGDV330AE5A002000601
伺服驅(qū)動器模擬量電壓、脈沖序列指令型SGDV-370D01A
全閉環(huán)模塊伺服系統(tǒng)SGDV370D01A001000001
安全模塊伺服單元SGDV370D01A001000010
高性能型伺服驅(qū)動器SGDV-370D01A001EX002
用途最佳型伺服單元SGDV-370D01A001FT001
用途最佳型伺服單元SGDV-370D01A001FT008
伺服驅(qū)動器模擬量電壓、脈沖序列指令型SGDV-370D01A002000
全閉環(huán)模塊伺服系統(tǒng)SGDV370D01A003000001
安全模塊伺服單元SGDV370D01A003000010
高性能型伺服驅(qū)動器SGDV-370D01A003EX002
用途最佳型伺服單元SGDV-370D01A003FT001
用途最佳型伺服單元SGDV-370D01A003FT008
伺服驅(qū)動器模擬量電壓、脈沖序列指令型SGDV-370D01A020000
伺服驅(qū)動器模擬量電壓、脈沖序列指令型SGDV-370D01B
伺服驅(qū)動器模擬量電壓、脈沖序列指令型SGDV-370D01B002000
伺服驅(qū)動器模擬量電壓、脈沖序列指令型SGDV-370D01B020000
直線伺服電機用伺服驅(qū)動器SGDV-370D05A
安全模塊伺服單元SGDV370D05A001000010
直線伺服電機用伺服驅(qū)動器SGDV-370D05A002000
安全模塊伺服單元SGDV370D05A003000010
直線伺服電機用伺服驅(qū)動器SGDV-370D05A020000
直線伺服電機用伺服驅(qū)動器SGDV-370D05B
直線伺服電機用伺服驅(qū)動器SGDV-370D05B002000
直線伺服電機用伺服驅(qū)動器SGDV-370D05B020000
伺服驅(qū)動器MECHATROLINK-Ⅱ通信指令型SGDV-370D11A
全閉環(huán)模塊伺服系統(tǒng)SGDV370D11A001000001
安全模塊伺服單元SGDV370D11A001000010
用途最佳型伺服單元SGDV-370D11A001FT003
直線伺服電機用伺服驅(qū)動器SGDV-370D15B020000
伺服驅(qū)動器MECHATROLINK-Ⅲ通信指令型SGDV-370D21A
全閉環(huán)模塊伺服系統(tǒng)SGDV370D21A001000001
安全模塊伺服單元SGDV370D21A001000010
高性能型伺服驅(qū)動器SGDV-370D21A001EX001
高性能型伺服驅(qū)動器SGDV-370D21A001EX002
用途最佳型伺服單元SGDV-370D21A001FT001
用途最佳型伺服單元SGDV-370D21A001FT003
用途最佳型伺服單元SGDV-370D21A001FT005
用途最佳型伺服單元SGDV-370D21A001FT006
伺服驅(qū)動器MECHATROLINK-Ⅲ通信指令型SGDV-370D21A002000
全閉環(huán)模塊伺服系統(tǒng)SGDV370D21A003000001
安全模塊伺服單元SGDV370D21A003000010
高性能型伺服驅(qū)動器SGDV-370D21A003EX001
高性能型伺服驅(qū)動器SGDV-370D21A003EX002
伺服驅(qū)動器MECHATROLINK-Ⅱ通信指令型SGDV-370D11A002000
全閉環(huán)模塊伺服系統(tǒng)SGDV370D11A003000001
安全模塊伺服單元SGDV370D11A003000010
用途最佳型伺服單元SGDV-370D11A003FT003
伺服驅(qū)動器MECHATROLINK-Ⅱ通信指令型SGDV-370D11A020000
伺服驅(qū)動器MECHATROLINK-Ⅱ通信指令型SGDV-370D11B
伺服驅(qū)動器MECHATROLINK-Ⅱ通信指令型SGDV-370D11B002000
伺服驅(qū)動器MECHATROLINK-Ⅱ通信指令型SGDV-370D11B020000
直線伺服電機用伺服驅(qū)動器SGDV-370D15A
安全模塊伺服單元SGDV370D15A001000010
直線伺服電機用伺服驅(qū)動器SGDV-370D15A002000
安全模塊伺服單元SGDV370D15A003000010
直線伺服電機用伺服驅(qū)動器SGDV-370D15A020000
直線伺服電機用伺服驅(qū)動器SGDV-370D15B
直線伺服電機用伺服驅(qū)動器SGDV-370D15B002000
伺服驅(qū)動器MECHATROLINK-Ⅱ通信指令型SGDV-370D11A002000
