3.1.1. Standard commands

3.1.1.1. Read File Record (20)
3.1.1.2. Write File Record (21)
3.1.1.3. Read Device Identification (43/14)

The following fields are common to several of the pages:

For most commands, the other fields that need to entered should be obvious if you read the appropriate description in the current Modbus specification. The following sections describe the few cases that may not be obvious.

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