As of ibaPDA version 6.32.0, the mirror mode option is available. The mirror mode allows multiple ibaPDA systems to acquire simultaneously the data of the same Flex devices. For this purpose, one ibaPDA system is configured as master. The master system is the only one that can configure the Flex devices. The other ibaPDA systems are configured as slaves and can only acquire the data of the Flex devices, but not change the configuration.
The master ibaPDA system requires a bidirectional FO connection to receive and send data to the Flex devices. The ibaPDA slave only needs a single FO connection to receive data from the Flex devices and the device configuration.
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The slave system cannot output data via fiber optics. |
Possible connections
The data from the master is mirrored via an ibaFOB-4o-D output board, which is connected to the white connector of the ibaFOB-2io-D for mirror mode. See also chap. Card connectors. The slave ibaPDA receives the data via an ibaFOB-D input board.
The fiber optic output of the last Flex device is connected to the input of an ibaBM-FOX-i-3o-D device. One FO output each of ibaBM-FOX-i-3o-D is connected to an FO input of the ibaPDA master and the ibaPDA slave.
This connection allows the ibaPDA slave to acquire data even when the ibaPDA master has been shut down.
The example above with ibaBM-DIS-i-8o is similar to the example with ibaBM-FOX-i-3oD. The ibaBM-DIS-i-8o device must operate in copy mode (S1 = 0).
Configuration in ibaPDA
The mirror mode is configured in the Configuration tab in the link view of the ibaFOB-D card.
3 settings are available for mirror mode:
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Disabled: The data is not mirrored, so this ibaPDA system is the only one that can acquire data and configure the devices.
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Master: This ibaPDA system configures the Flex devices on the link. The data and the device configurations are mirrored so that other ibaPDA systems can also acquire the data.
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Slave: This ibaPDA system receives the device configuration from the master ibaPDA so that it can acquire data configured by the master ibaPDA.
If an ibaPDA system is configured as a slave, it can use the autodetect function to load the configuration of the devices from the ibaPDA master. A slave ibaPDA cannot change the device configuration. The slave ibaPDA shows the link and its modules in the signal tree with lock symbols.
When the acquisition has been started on the slave ibaPDA, the slave waits until it receives the configuration from the master. If this configuration is different from the current configuration, the slave will load the new configuration.
If the slave doesn’t receive a configuration within 6 s, ibaPDA generates an error message. If the option Allow start of the acquisition when the link is in slave mirror mode and master isn’t connected is enabled, then the acquisition will start anyway with the last configuration.
When the master ibaPDA changes the configuration while the slave ibaPDA is acquiring then the slave will automatically restart.