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 the master. This is the only system that can configure the connected 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. Since ibaDAQ has an integrated ibaPDA system, the device can also be operated as master or slave in mirror mode.
The master ibaPDA system requires a bidirectional fiber optic 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
Connection in mirror mode with ibaBM-FOX-i-3o-D
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 of ibaBM-FOX-3o-D is connected to the FO input of the ibaPDA master (ibaDAQ in the example) and of the ibaPDA slave.
This connection allows the ibaPDA slave to acquire data even when the ibaPDA master has been shut down.
Connection in mirror mode with ibaBM-DIS-i-8o
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 fiber optic connection view.
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.