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Preface
■ About This Guide
GL20‑4AD series 4‑channel analog input module supports voltage and current input
with a 16‑bit resolution, and can be used together with a PLC master such as Easy
series.
This guide describes the mechanical installation, electrical installation and
programming examples of the product.
■ More Data
Data Name Data Code Description
GL20‑RTU‑ECT
Communication Interface
Module User Guide
PS00004985 This guide describes the installation,
wiring and more of the product.
■ Revision History
Date Version Description
June 2022 A01 Minor corrections
March 2022 A00 First release.
■ How to Obtain
This guide is not delivered with the product. You can obtain the PDF version by the
following method:
● Log in to Inovance's website (
http://en.inovance.cn/
), choose Support >
Download, search by keyword, and then download the PDF file.
● Scan the QR code on the product with your mobile phone.
■ Warranty Agreement
The warranty period of the product is 18 months as of the date of manufacture (refer
to the barcode on the equipment). If otherwise agreed upon, the agreed terms and
conditions shall prevail. After 18 months, a proper maintenance fee is charged.
Within the 18‑month warranty period, a reasonable repair fee will be charged for
damages caused by the following:
● Operations not following the user instructions
● Fire, flood, or abnormal voltage
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