PLC Steps – Your Guide to Industrial Automation

Objective

Call the FC_DeviceStatusfunction for 15 devices in a loop, using arrays stored in a data block to hold the inputs and outputs

Data Block: DB_DeviceStatusData

Prepare the Structure for 15 devices

Logic in OB1 (SCL):

Use FOR Loop to check 15 devices

Explanation:

• Connected[i] is the BOOL input for the i-th device.
• Online[i] and Ofline[i] are the outputs of the function for the i-th device.
• The FOR loop iterates from 1 to 15, calling the function for each device in sequence.
• This way, a single function can manage multiple device statuses cleanly and efficiently.

Benefits:

• Modularity: Logic for device status is encapsulated inside the function.
• Scalability: Easily extendable by increasing the array size.
• Maintainability: Centralized function reduces code duplication.
• Readability: The FOR loop simplifiesrepetitive code.

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