Baldor Modbus Plus Instrukcja Użytkownika Pobierz pdf (Strona 20)

AN00174-001 Modbus TCP Fieldbus Option for MotiFlex e100.doc

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• Process Data (Controlled Node->Manager Node) – this is the Process Data that is to be

passed to the NextMove e100 from the drive (in our case this corresponds to NetData

Channels 1 and 2 which we want to pass from the client/PLC to the NextMove e100 via the

MotiFlex Fieldbus Option

Double-click the Process Data (Controlled Node<-Manager Node) icon. WorkBench will display the

‘Add Process Data Object’ dialog. We are configuring the first object to pass from the NextMove

e100 to the MotiFlex e100 (NetData Channel 3) so our dialog needs to be set as shown below:

Click on ‘OK’ to accept this mapping and then repeat for NetData Channel 4 (the second Process

Data item to be passed from the NextMove to the MotiFlex).

Now double-click the Process Data (Controlled Node->Manager Node) icon to setup the mappings

from the drive to the NextMove (NetData Channels 1 and 2). Again we maintained a direct

relationship between the drive’s NetData channels and the channels on the NextMove (e.g.

NetData Channel 1 was mapped to NetData Channel 1).

If you’ve added these mappings as described then your Additional Process Data section should

look like this:

We mapped NetData Channel 3 on the

NextMove e100 to NetData Channel 3 on

the MotiFlex e100. The channels don’t have

to match but we did this so it is easier to

follow the logical path for the data.

As we are sending and receiving 32 bit

values we selected 32-bit for the Network

Transmission data. The dialog allows you to

specify different data types so that the

data can be padded correctly when sending

and receiving other data formats (e.g.

Booleans or 16 bit data).

Note also that the dialog shows NetData is

a 32-bit integer. You may recall from

earlier that we used these 32 bits to store

either a 32 bit (IEEE) float, a 16 bit Integer

or a 32 bit Long Integer. How this is

decoded is determined by the keyword

ultimately used to extract the data

(NetFloat or NetInteger).

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