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3-1 Overview of DeviceNet Communication

3-3

Communicating with the GT2 series

- DeviceNet Compatible Network Unit DL-DN1 User’s Manual (GT2) -

The master unit of the DeviceNet system can use the following functions:

* When you use this function through explicit messaging, use a command parameter

of each function assigned for external inputs (1 to 5). For details, refer to

"Command Parameter List for GT2 Series" (page 3-28).

 I/O Communication

• The output signal, comparator va lue, and error status of sensor amplifiers can be

mmunicated without the need of a ladder program.

• By using the IN and OUT areas as handshake signals, the master unit can execute

external inputs to the sensor amplifier or change setting values.

"I/O Communication" (page 3-4)

 Explicit Messaging

The master unit can use explicit messaging commands to directly read/write

paramete

r values of sensor amplifiers. All functions that can be executed on sensor

amplifiers are available through explicit messaging.

"Explicit Messaging" (pa ge 3-21)

Overview of Communication Methods

Function of sensor

amplifier

Communication Methods

I/O Communication

p. 3-4

Explicit Messaging

p. 3-21

Read status

Ye s

Read output

Read current value

Execute external input*

Change bank number

Rewrite setting value

Motion command

Read current value,

setting, and status

Read data with decimal point

information

Rewrite setting

Lock all

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Keyence DL-DN1 Bedienungsanleitung Seite 33