In mirror mode multiple ibaPDA systems can receive the data from the same 32Mbit Flex devices at the same time. For this purpose, one ibaPDA system is configured as the master. The master system is the only one that can configure the connected Flex devices. The other ibaPDA systems are configured as slaves and can only acquire the data from the Flex devices, but not change the configuration.
The master ibaPDA system requires a bidirectional fiber optic link to receive and send data to the Flex devices. The slave ibaPDA only needs a single fiber optic link 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 fiber optic output on the last Flex device is connected to the fiber optic input on an ibaBM-FOX-i-3o-D device. One fiber optic output on the ibaBM-FOX-3o-D device is connected to a fiber optic input on the master ibaPDA system; another output is connected to an input on the slave ibaPDA.
This connection allows the slave ibaPDA to acquire data even when the master ibaPDA system has been shut down.
The example above with ibaBM-DIS-i-8o is similar to the example with ibaBM-FOX-i-3o-D. For this purpose, the ibaBM-DIS-i-8o device must be set to copy mode (S1 = 0).
Configuration in ibaPDA
To configure the mirror mode, open the Configuration tab in the link view of the ibaM-FO-2IO module.
3 settings are available for the mirror mode:
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Disabled: The data is not mirrored, therefore 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 this 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 the data configured by the master ibaPDA.
The slave ibaPDA can get the device configuration from the master ibaPDA by using the "autodetect" function. A slave ibaPDA cannot change the device configuration. The slave ibaPDA displays the link and its modules in the signal tree with padlock 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 from the master within 6 s, ibaPDA will output an error message. If the option “Allow start of the acquisition when link is in slave mirror mode and master isn’t connected” is enabled, then the acquisition will start anyway with the last configuration.
If the master ibaPDA changes the configuration while the slave ibaPDA is acquiring data, then the slave will automatically restart the acquisition.