KEYENCE DL-DN1 - Manual (Page 33)

3-1 Overview of DeviceNet Communication
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- 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 value, and error status of sensor amplifiers can be
communicated 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
parameter values of sensor amplifiers. All functions that can be executed on sensor
amplifiers are available through explicit messaging.
"Explicit Messaging" (page 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
Yes
Yes
Read output
Read current value
Execute external input*
Change bank number
Rewrite setting value
Motion command
No
Read current value,
setting, and status
Read data with decimal point
information
Rewrite setting
Lock all