IBA Optical Signal Multiplier ibaBM-FOX-i-3o-D

Optical Signal Multiplier ibaBM-FOX-i-3o-D

Distributes one ibaNet line to 3 ibaNet lines

Supports 2Mbit, 3Mbit, 5Mbit and 32Mbit

Reserved bandwidth for Ethernet communication

The Ethernet channel (address 0) is used to transmit configuration data. If many devices

are configured with a lot of signals, it may happen, that only the minimum size of 1 kB/s

is reserved for Ethernet communication. This is not sufficient in many cases and may

cause, that the configuration data are transmitted only slowly or cannot be transmitted at

all.

It is now possible to reserve a fixed bandwidth for the Ethernet channel with the option

“Reserve bandwidth for ethernet communication“.

Operation as sniffer

When the device operates as sniffer, no configuration in the engineering tool of the used

EtherNet/IP scanners (master) is necessary.

To configure ibaPDA, knowledge concerning the structure of the transferred user data is

needed, basically the following information:

❑ Between which scanner and which adapter the data is transferred

❑ Will the data be transfered from the scanner to the adapter (OUTPUT) or will it be

transfered from the adapter to the scanner (INPUT)

❑ Where (Byte offset) in the slot data the corresponding signal is saved and which

data type is used.

A distinction must be made between (TCP) connections and (UDP) data streams. An

EtherNet/IP connection usually consists of one connection and two data streams (one in

each direction). The data streams are used for cyclic IO data exchange.

The following technical restrictions are to be taken into consideration:

❑ To detect the EtherNet/IP connection, the telegram traffic must be sniffed during

connection setup (CPU start-up, cable reconnection). If this is not the case, only the

running data streams are detected. In this case, it may be that the cyclic I/O data

cannot always be clearly assigned to EtherNet/IP connections. Data acquisition is

then not reasonably possible.

❑ A maximum of 1024 analog and 1024 digital signals from up to 64 bidirectional con

nections can be configured.

❑ Up to 1023 data streams and 511 connections can be displayed in the online diag

nostics.

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Example for FO budget calculation

As an example, an FO connection from an ibaFOB-io-Dexp card (FO transmitter) to an

ibaBM-PN device (FO receiver) is used.

The example refers to a point-to-point connection with an FO cable of type 62.5/125 µm.

The light wavelength used is 850 nm.

The range of the minimum and maximum values of the output power or receiver sensi

tivity depends on the component and, among other things, on temperature and aging.

For the calculation, the specified output power of the transmitting device and on the other

side the specified sensitivity of the receiving device must be used in each case. You will

find the corresponding values in the respective device manual in the chapter “Technical

data” under “ibaNet interface”