Rockwell-automation 57C610 Enhanced Basic Language, AutoMax Manual do Utilizador descarregar pdf (Página 111)

8Ć1

8.0 ETHERNET

COMMUNICATION

FUNCTIONS

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Function Name

Description

ENI_INIT% Initializes ENI

SOCKET% Creates socket

BIND% Binds socket

CONNECT% Assigns destination for socket

ACCEPT% TCP only; directs a passive open

SEND% Sends specified type of variable

SENDL% Sends double integer array

RECV% Writes received variable

RECVL% Writes received array

SETSOCKOPT% Sets socket option

GETSOCKOPT% Reads socket option

SHUTDOWN% Closes socket

8.1 ENI_INIT% Function

Format:

ENI_INIT%( slot%, addr$, tcp%, udp%, ether% )

where:

slot% is the logical slot the ENI is to be in. This can be

a variable or a constant. The only legal values

are 2 or 4.

addr$ is the Internet address to assign to the ENI. This

is a string of four decimal numbers separated

by decimal points, each ranging from 0 to 255.

A typical address is 128.0.0.10.

tcp% defines the number of sockets to use for the

TCP protocol.

udp% defines the number of sockets to use for the

UDP protocol.

ether% defines the number of sockets to use for Raw

Ethernet.

The ENI_INIT% function commands the Ethernet Network Interface

to go through its initialization. The ENI supports three types of

protocols: TCP, UDP, and Raw Ethernet. Up to 64 channels (sockets)

can be assigned to each ENI. Part of the initialization selects how

may sockets to allow for each protocol. The green LED on the front

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 145 146

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