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Application Note 105U-G-PR2 Profibus Master

Issue 1.2 – May 2005

©ELPRO Technologies Pty Ltd

Page 10 of 13

app_105U-G_PR2_1.2.doc

Once the Digital inputs are turned on the register locations 4306 & 4307 are filled with FFFF

indicating that the inputs are on and will be written to the Fieldbus I/O location configured, which

in turn turns the Digital outputs on the ET200S on.

The Disable Read Area and Disable Write

Area are used when diagnostics are needed

for configurations over the radio network.

If you can read values from the slave device but are not

able to get them sent to the correct destination or you

believe values are incorrect you can select Disable Read

Area. This will stop the Slave device overwriting values

from the Fieldbus Interface into the I/O database so you

can then double click on a register location that is being

mapped over the radio network enter in a value and check

it at the destination module to confirm correct location

and value.

Once this has been confirmed ensure that the Disable

Read Area has been deselected.

If you want to do local diagnostics to view values coming in from the radio network without

sending value to the Profibus Slave device and you can not disconnect the Profibus cable due to

creating a possible Bus Failure for other devices on the network you can select Disable Write

Area. This will stop any values being written to the Fieldbus and onto the Profibus Slave device.

Once this testing is completed ensure that the Disable Write Area has been deselected.

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Elpro Technologies 105U-G Spécifications Page 48