Rockwell-automation 1734-ADNX POINT I/O DeviceNet Adpater User Manual Manual de usuario descargar pdf (Pagina 31)

Publication 1734-UM002C-EN-P - July 2003

What is the 1734-ADN(X) Adapter? 2-11

Set this parameter in RSNetWorx for DeviceNet to one of the

following baudrates:

• 125 Kbaud

• 250 Kbaud

• 500 Kbaud

• 1 Mbaud (available with the 1734-ADN only)

When you download this parameter, the adapter sends a command to

reset all present I/O modules on the backplane to the new baudrate.

If additional modules are connected to the adapter, you must

download the Backplane/Subnet Baudrate to make sure the new

modules use the same rate as the others.

The baudrate may not take effect until power is recycled or the I/O

modules are reset.

Backplane/Subnet Baudrate performs the following functions:

• Sets the adapter’s Subnet baudrate

• Sends a message to all connected backplane I/O modules. If an

I/O module is set to autobaud, it receives the message but

ignores the new baudrate.

IMPORTANT

Changes to the Backplane/Subnet Baudrate

parameter only take effect if they are downloaded on

an individual basis (e.g., If you change the

Backplane/Subnet Baudrate and download the

changes with additional changes to other features,

the Backplane/Subnet Baudrate remains at the

previous setting).

Also, this parameter should be set to “Do Nothing”

when you download all parameters or when

Automatic Device Replacement is enabled for

the adapter.

If you want to set an I/O module to use a specific

baudrate (i.e., 125, 250, 500), you must first disable

Backplane Autobaud for that module.

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Rockwell-automation 1734-ADNX POINT I/O DeviceNet Adpater User Manual Manual de usuario Pagina 31