Moxa M-1401 Manuál stáhnout pdf (Strana 17)

ioLogik MXIO DLL API Reference Programming Flow

2-7

Modbus Command Sets vs. Direct I/O Command Sets

The MXIO Library offers two options for accessing I/O data from ioLogik 4000, E2000, and

R2000 I/O.

Modbus Command Sets

ioLogik 4000, E2000, and R2000 I/O use Modbus/TCP and Modbus/RTU to communicate with

host computers. The MXIO Library includes Modbus command sets that use the Modbus protocol

data format to access I/O data. This is a good choice if you are already familiar with the Modbus

protocol and prefer using the Modbus data structure.

Direct I/O Command Sets

As an alternative to the complex data structure of Modbus, the MXIO library also provides direct

I/O command sets for a more intuitive method of obtaining I/O data. With direct I/O command sets,

each I/O point or channel can be accessed using the physical slot number and channel number.

This allows users to obtain I/O data quickly and easily.

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