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Is it possible to read values from Modbus and using them for changing Off parameter of Up/Down counter only if some condition is meet?

Created by: peconver at: 2/16/2022 8:45 PM (4 Replies)

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2/16/2022 8:30 PM	Rate (0)
peconver Member Joined: 2/15/2021 Last visit: 5/25/2022 Posts: 7 Rating: (0)	Is it possible to read values from Modbus and use them for changing the Off parameter of the Up/Down counter only if some condition is met? Assuming that the Off parameter is a crucial parameter (it should not be changed if Modbus is not available, or in some stage of the process, ...), do you find changing it using Modbus TCP as a standard thing to do or do you see some challenges which can not be reliably solved? (with LOGO! Soft Comfort 8.2 and LOGO!8.FS4)

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2/16/2022 8:33 PM	Rate (1)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/10/2023 Posts: 31594 Rating: (3928)	You can only connect pins that have the same connection type. There is: Digital connections = thin connecting lines between a digital output pin and a digital input pin. Analog connections = thick connecting lines between an analog output pin and an analog input pin. Reference connections = thin lines between a parameter array output pin and a parameter array input pin. You probably mean a reference connection. How can you configure references between blocks in LOGO! 8?

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2/16/2022 8:52 PM	Rate (1)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/10/2023 Posts: 31594 Rating: (3928)	It's possible to read values from Modbus with a FS4-LOGO! to change the OFF parameter. If there is to be a condition for this, then I ask myself the question: What value should the OFF parameter have if the condition is not active?

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2/16/2022 8:54 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/10/2023 Posts: 31594 Rating: (3928)	This the third topic to a question how to chance a OFF parameter of a UP/DOWN counter. Didn't you also think that you have to tell us your concept?

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2/16/2022 9:39 PM	Rate (2)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/10/2023 Posts: 31594 Rating: (3928)	Maybe this helps you ... Attachment Modbus_Condition_FS4.zip (215 Downloads)

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