The following screenshot shows the information you see when the link is operating in 32Mbit Flex mode. Up to 15 devices can be connected in a ring topology per link. In the signal tree, links 1 – 15 below the ibaFOB-D card correspond to the address that is set with the rotary switch on the connected device.

Information on the Link and Image generation areas can be found in chapter Link view – 32Mbit.

Additional information are:

Link

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 connection is displayed:

  • Ring: One or more devices (cascade) are bidirectionally connected and the FO ring is closed.

  • Open chain: Only the FO input is connected to a device. The output is not connected or the ring is interrupted at one point in the cascade.

Mirror mode

Indicates whether mirror mode is disabled or enabled

If mirror mode is enabled, the display shows whether the board is configured as master or slave system. For a description of the mirror mode, see chapter Mirror mode with 32Mbit Flex.

Roundtrip delay

Telegram cycle in the closed FO ring.

The time depends on the number of the connected devices in the ring (approx. 2 µs per device).

Due to the roundtrip delay the data of the connected devices might be captured asynchronously (up to one telegram cycle).

Frame time

Cycle in which the data frames are sent. (Smallest configured timebase or 100 µs, when 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 size of the respective channel:

  • Row 0: Ethernet channel

  • Rows 1-15: connected devices with the respective address 1-15