Omron GRT1 - 27-11-2006 Operation Manual page 63

Setup the GRT1-PRT Configuration
Group Setting
FINS Fragment Length
Setting
Extensions Box
Auto-Clear Processing
Configuration Data
Convention
Error on Cyclic Data
Exchange
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The Group Setting selects to which of 8 groups the GRT1-PRT will belong.
This setting allows the user to control input and output data on specific groups
of devices using the broadcast command. Refer to Appendix A-4 Bus Access
Protocol for more information on the broadcast command.
The FINS Fragment Length determines the maximum fragment size used on
messaging services, when being wrapped in to PROFIBUS messages. The
default setting is 72 bytes. It is recommended not to change it.
The Extensions Box contains a number of settings, which define additional
behaviour of the PROFIBUS Master Unit with respect to the GRT1-PRT. This
specific behaviour is defined in the PROFIBUS DP extensions standard
(PROFIBUS DP-V1), but it does not necessarily require PROFIBUS DP-V1
capabilities from the PROFIBUS Master Units.
The Auto-Clear processing box defines whether or not the PROFIBUS Master
Unit should ignore a failure of the GRT1-PRT, when Auto-CLEAR has been
enabled in the Master Unit (Refer to Appendix A-6 Protection Mechanisms for
more information on Auto-CLEAR). When Ignore Auto-CLEAR has been
selected, a failure of the GRT1-PRT (i.e. it requests new parameters, or fails
to respond) will not activate the Auto-CLEAR mode. The Master Unit will how-
ever, service the slave device.
This feature can be used in case failure during operation, does not necessi-
tate to switch the entire network to Auto-CLEAR mode.
Control
Process Auto-CLEAR
Ignore Auto-CLEAR
The Configuration Data Convention setting defines how the GRT1-PRT will
handle the special identifier format data parts of the Check I/O configuration
message. The GRT1-PRT can perform the check either according to the orig-
inal PROFIBUS DP standard, or according to the PROFIBUS DP-V1 stan-
dard. This allows the GRT1-PRT to use either standard PROFIBUS DP data
types or extended PROFIBUS DP-V1 data types.
Control
DPV1 Compliant
EN50170 Compliant
The Error on Cyclic Data Exchange settings box, defines the behaviour of the
PROFIBUS Master Units on the PROFIBUS network with respect to the
GRT1-PRT, in case it fails to respond during I/O data exchange. Depending
on the setting, the Master Unit will either continue sending I/O data exchange
messages to the slave device, or abort I/O data exchange, and continue with
requesting the GRT1-PRT Unit's diagnostics data. When continuing sending I/
O data exchange data, the Unit's diagnostics data will not be updated.
Description
When Auto-CLEAR has been enabled in the PROFIBUS
Master Unit, a failure of the GRT1-PRT will cause an
Auto-CLEAR event.
When Auto-CLEAR has been enabled in the PROFIBUS
Master Unit, a failure of the GRT1-PRT will not cause an
Auto-CLEAR event. The Master will however service the
GRT1-PRT Unit (e.g. send new parameters).
Description
The Check I/O configuration message will contain PROFI-
BUS DP-V1 Data type definitions in the special identifier
format data parts and the GRT1-PRT will perform the
check on this assumption.
The Check I/O configuration message will contain stan-
dard PROFIBUS DP Data type definitions as well as ven-
dor specific data types and the GRT1-PRT will perform
the check on this assumption.
Section 3-3