5.4 Using Fast Device Startup
About Fast Device Startup
The Fast Device Startup functionality is used in tool changing applications to
shorten the connection time between the PROFINET controller and an I/O device.
To be able to use this functionality, the I/O device needs to support this functionality.
All devices must support fast startup in the communication chain. Devices such
as switches or other intermediate hardware that could affect the PROFINET
communication. For more information, see
Poor performance using fast startup
Some manufacturers also call this functionality Fast Start Up (FSU) or Prioritized
Startup.
To activate Fast Device Startup against an I/O device, activate the system parameter
Fast Device Startup
and select the corresponding port(s) to be configured. See
Fast Device Startup on page 57
Note
The I/O device with FSU functionality is connected with the IRC5 controller. When
the power of the I/O device is switched off and switched on again, the IRC5
controller establishes contact with the I/O device using the fast startup sequence.
Three alternative connections
I/O device connected via a switch
xx1100000093
IRC5 controller acting as PROFINET controller
A
Switch
B
Connection point
C
I/O device
D
Port 1 on the device
F
Port 2 on the device
G
In this alternative the PROFINET controller connects to the I/O device via a switch.
Enable fast device startup and select 100 MBit (full duplex) on port 1. The port
number is usually displayed upon the I/O device itself.
Continues on next page
44
Application manual - PROFINET Controller/Device
3HAC050969-001 Revision: G
© Copyright 2015-2018 ABB. All rights reserved.
5 Configuring the internal controller and external device
5.4 Using Fast Device Startup
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