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ریداندنسی بین دوپورت HMI TP1500 SIEMENS

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Rouhollah

(@rouhollah)

Eminent Member

عضو شده: 7 سال قبل

ارسال‌ها: 40

۱۴/۰۳/۱۳۹۹ ۳:۳۶ ب.ظ

با سلام حضور دوستان،

یک مشکل جدید :

دوتا PLC S7-400 بصورت ریداندنت هستند که هر دو از طریق پورت های PN به دو سوییچ مستقل وصل شده اند وا از سوییچ ها هر کدام به پورت های HMI TP1500 ارتباط وجود دارد. همانطور که میدانیم دوتا پورت روی HMI بصورت سوییج است و یک IP دارند. مشکلی هست HMI فقط اطلاعات CPU مستر را می خواند. هنگامیکه سوییج اور میکنیم بین دوتا CPU در حالیکه هر دو CPU در حالت RUN باشند ،مشکلی نیست و HMI متوجه میشود که کدام CPU مستر شده و خودش اطلاعات را از مستر دریافت میکند .ولی اگر CPU مستر را استاپ بدهیم ، HMI متوجه نمی شود و اطلاعات را از همان CPU مستری که استاپ شده می خواند که اطلاعات درواقع فریز شده هستند .

آیا باید برنامه ای بنویسیم یا کانفیگی در HMI یا در طرف CPU ها بنویسیم که این این مشکل به وجود نیاید و HMI متوجه استاپ شده CPU مستر بشود و خودبه خود به CPU دیگر سوییچ کند ؟ ( به نظرمی رسد وقتی در حالت آنلاین و در حالت run هر دو CPU بین master ,slave سوییج میشود ، از طرف CPU به HMI اعلام می شود که کدام مستر شد ولی وقتی master استاپ می شود، به HMI اطلاع داده نمی شود)

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SGH

(@sgh)

Trusted Member

عضو شده: 7 سال قبل

ارسال‌ها: 91

۰۴/۰۴/۱۳۹۹ ۷:۰۹ ب.ظ

سلام وقت بخیر

یکی از راه هاف ایجاد دو کانکشن و در HMI و ایجاد دو Tag برای هر متغییر است. به طوری که هر Tag از یک آدرس در زیر مجموعه دو کانکشن قرار گیرد. بنابرین لازم است در برنامه HMI هم Tag ها با هم Or شوند.

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SGH

(@sgh)

Trusted Member

عضو شده: 7 سال قبل

ارسال‌ها: 91

۰۴/۰۴/۱۳۹۹ ۷:۱۸ ب.ظ

نمونه ارتباط یک پنل HMI به 400H در کتاب سیستم های کنترل افزونه زیمنس از جناب استاد مهندس ماهر ارائه شده است.

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