OPC write values from 3th party to 800M best practice
Hello in past when i want to write values from 3th party clients to MP200 or AC450 i use DAT Data Type
What is best practice when i want to write to AC800M Controller (PM866) which data type should i use now ?
Br
What is best practice when i want to write to AC800M Controller (PM866) which data type should i use now ?
Br
Asked 8 months ago
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Generally try to use 4 byte numbers (dint,real,dword). They are efficiently transferred without delay.
Text is usually delayed for about 10 seconds, even if text technically is supported. There are some work-arounds to reduce that delay, one we use is to transfer text information as a dword struct, but that involves some customized code at both ends.
Date and Time we have noticed some problems (in the past). Therefore we are always converting to two values, Date dint + Time Dint, during communication.
Text is usually delayed for about 10 seconds, even if text technically is supported. There are some work-arounds to reduce that delay, one we use is to transfer text information as a dword struct, but that involves some customized code at both ends.
Date and Time we have noticed some problems (in the past). Therefore we are always converting to two values, Date dint + Time Dint, during communication.
Answered 8 months ago
Answers
1
For AC800M you can write to any variable type supported by the OPC Server. If you can see it, and it's write enabled, then you can write to it.
Answered 8 months ago
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