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P94DLL01A

4 Communication Flowchart

The ﬂowchart in Figure 1 provides the instructions of how to use DLL functions for communication over

Ethernet or serial communications ports.

Begin

Ethernet or Serial Port

Communication?

Ethernet

Known

Serial Port

Drive’s Symbolic Name

Known?

Unknown

Execute function:

SS940_EnableSerialInterface

Execute function:

SS940_FindByName

to obtain the drive’s IP address

Execute function:

OpenInterfaceB

with IP = 127 . 0 . 0 . N

where N is the drive’s address 1

Execute function:

OpenInterfaceB

with the drive’s IP address

Communicate with drive

by setting/reading the drive’s variables

Execute function:

SS940_CloseInterface and SS940_DisableInterface

(if serial port was used)

when communication is done

NOTE:

All Bold Italic phrases are function names.

Refer to Section 8 for details.

Figure 1 Communication Flowchart

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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