HMS Networks Anybus CompactCom 40 Network Manual page 31

Fast Start Up
4.9. Fast Start Up
4.9.1. General Information
The Fast Start Up (FSU) function enables PROFINET IO devices, connected to the network, to power up quickly.
This is useful in, for example, robot applications, where rapid retooling is necessary. With FSU activated, the
module will send a DCP Hello message as soon as possible after power-on.
This function is enabled by two GSD keywords: PowerOnToCommReady and DCP_HelloSupported. The activation
is made from the PLC configuration tool.
The FSU time is defined as the number of milliseconds (ms) from hardware reset (or power-on) until the module
enters the PROCESS_ACTIVE state. On PROFINET, it is recommended to try to reach a FSU time <= 500 ms.
To enable FSU, set values according to the following (listed for the Device Access Point(s)):
PowerOnToCommReady
DCP_HelloSupported
ParameterizationSpeedupSupported
To disable FSU, set the keywords to the following values:
PowerOnToCommReady
DCP_HelloSupported
ParameterizationSpeedupSupported
4.9.2. How to Improve the FSU Time
• Issue as few commands as possible to the module during the SETUP state.
• Respond as fast as possible to all commands issued by the module after setup is complete.
• If there is record data in the GSD file, use attribute #4 in the Application Object (FFh), instance #1 (Parameter
Control Sum). During the next start-up, this parameter data is already saved in the module's nonvolatile
storage and will not be sent to the application.
4.9.3. Fast Start Up Configuration with TIA Portal
See chapter "Optimizing startup time" in the TIA Portal help documentation.
4.9.4. Fast Start Up Configuration with STEP7
See chapter "Prioritized startup" in the STEP7 help documentation.
SCM-1202-021 Version 2.6
®
Anybus CompactCom
FSU time, in milliseconds (ms). This value must be measured by the customer.
Value: true.
Value: true.
Remove this keyword from the GSD file.
Value: false.
Remove this keyword from the GSD file.
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