KEYENCE DL-PN1 - Manual (Page 6)

4 - PROFINET Communication Unit DL-PN1 User's Manual (IB) -
DL-PN1 PROFINET Communication Overview
The DL-PN1 enables you to read or write various settings and conditions of the sensor
amplifier via PROFINET.
Examples are shown below.
DL-PN1 PROFINET functions are specified in a GSDML file.
You can download the GSDML file from the KEYENCE website:
http://www.keyence.com
Data I/O Communication
 What is data I/O communication?
This function enables cyclic (i.e. in fixed intervals) data communications with the
PROFINET devices. This function provides high-speed control with several to several
tens of milliseconds.
The communication can be controlled by referencing and updating the variables in the
PLC, making it easy to control the programs on the PLC side.
Point
• Communication settings for the data I/O communication, such as
Update time (communication cycle) and the data size, will be
configured on the PLC side.
• In a network with many connected devices (including the PROFINET
devices), a network delay and/or packet loss may occur when there
is a heavy load on the network. Conduct a thorough verification
before the operation.
Item
Data I/O
Communication
Record Data
Communication
Reference
page
Reading the sensor amplifier control output   8
Executing the external input to the sensor amplifier   8
Reading the sensor amplifier comparator value   9
Changing the sensor amplifier setting value  14
Input Area
· Status result
· Control/status/error result
· Read comparator value
Output Area
· Execute external input
Output Area
Input Area
PROFINET
communication
I/O Controller
· Status result
· Control/status/error result
· Read comparator value
· Execute external input
Update time
(Communication
cycle)