ibaDAQ
Manual
Issue 1.1
51
tree on the left, the links 1 - 15 below the FO link correspond to the address set at the
connected device by means of the rotary switch.
Additional items (compared to 3Mbit protocol):
In the Link area
Time between telegrams
Time between two telegrams measured by the ibaFOB-D card. It should be equal to
the configured frame time.
Mode
The status of the link is shown:
Ring
: One or more devices (cascade) are connected bidirectionally and the FO ring
is closed.
Open chain
: Only the FO input is connected to a device. The output is not con-
nected or the FO ring is interrupted in one place.
Mirror mode
Display whether mirror mode is disabled or enabled. If mirror mode is enabled, the
display shows whether the device is configured as master or slave system. For de-
scription of mirror mode refer to chapter 10.6.5.1.
Roundtrip delay
Telegram cycle in the closed FO ring. The time depends on the number of con-
nected devices in the ring (approx. 2 µs per device).
Due to the roundtrip delay, the data of the connected devices might be captured
asynchronously (by up to one telegram cycle).
Frame time
Cycle time during which the frames are being sent. (Smallest configurable timebase
of the connected devices or 100 µs if this timebase is an integer multiple of 100 µs.
The timebase of all devices must be a multiple of the smallest timebase).
Table
The table shows the cycle time and the data volume for the corresponding chan-
nels:
Line 0: Ethernet channel
Line 1-15: connected devices with the respective address 1-15.
10.6.5 Link – Configuration tab
10.6.5.1 Mirror mode with 32Mbit Flex
The mirror mode allows multiple ibaPDA systems to simultaneously acquire the data of
the same 32Mbit Flex devices. For this purpose, one ibaPDA system is configured as the
master. This is the only system that configures the connected Flex devices. The other
ibaPDA systems are configured as slaves and they can only acquire the data of the Flex
devices, but not change the configuration. Since ibaDAQ has an integrated ibaPDA sys-
tem, the device can equally 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 slave ibaPDA only needs a one-way FO link to receive
data from the Flex devices and the device configuration.