Omron CS1W-PRM21 Operation Manual page 84

PROFIBUS-DP Master DTM
Master Status Tab
LED Indicator
OPERATE
STOP
CLEAR
OFFLINE
Data Exchange
Auto-Clear enabled
Valid Configuration
Disturbed Bus error
PROFIBUS Protocol Error
Double Master address Error
Hardware error
Mode Command Error
Parameter error
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• Master Status tab.
• Slave Status tab.
• Error History tab.
Also in the Monitor tab, the method of Diagnostics data refreshing can be
selected.
• Automatic
The Diagnostics data is constantly retrieved from the Unit.
• Manual
Retrieving the Diagnostics data from the Unit is done when pressing the
Manual button.
The Master Status tab (shown in the figure above) contains Diagnostics infor-
mation regarding the Master Status. Each of the four status boxes, is related
to one of the Unit's status words in the PLC CIO Area Memory (see sections
4-2-3 Unit Status (Word n+4) to 4-2-6 Slave Status (Word n+7) ).
The status is indicated by red or green LED indicators. Red indicates an error
situation, green indicates a status indication. The LED indicators are listed in
the table below.
Master Unit is in OPERATE mode.
Master Unit is in STOP mode.
Master Unit is in CLEAR mode.
Master Unit is in OFFLINE mode.
When set to ON, it indicates that the Master Unit is in Data Exchange with all its
allocated and enabled slave stations.
Auto-Clear function has been enabled in the downloaded configuration.
The Master Unit contains a valid configuration.
When turned ON, the Disturbed Bus error indicates that distorted messages
have been received by the Unit. This may occur if the network is not properly
terminated or a cable is used, which is too long for the selected baud rate.
When turned ON, the PROFIBUS Protocol Error indicates that an error has
occurred in the protocol handling, e.g. stations beyond the HSA have been
detected or a transmitted token frame could not be read back. The Master unit
has switched to OFFLINE.
Indicates that a second Master with the same address has been detected on the
Bus. The Master Unit has switched to OFFLINE.
When turned ON, the Hardware Error indicates that an error has occurred on
the bus, e.g. message exceeding 256 bytes, broken messages, faulty bus tim-
ing. The Master Unit has switched to OFFLINE.
When set to ON, it indicates that two switches in the CIO switch word (see sec-
tion 4-2-1 Software Switches 1 (Word n) ) were set simultaneously.
The Parameter set error indicates if an error has been detected in the contents
of the Parameters set while configuring the PROFIBUS interface, using these
parameters.
Description
Section 3-3