Overview

A 'PVI Line' is a protocol driver.

The basic task of a 'PVI Line' is to connect PVI objects (service objects) with objects outside of PVI.

The line is also responsible for communicating with B&R controllers (PLCs) and determines the communication protocol to be used to do so.

The represention of a PVI Line is a 'Line' Object

The 'Line' is the parent of a 'Device'.

Line name	Name	usage
LNANSL	ANSL line:	Communication with the ANSL protocol (was introduced with PVI 4.1.03; is only available for SG4 targets from AR version 4.08).
LNINA2	INA2000 line	Communication with the INA2000 protocol (SG3, SGC, SG4).
LNNET2	NET2000 line	Communication with the NET2000 protocol (SG3, SGC, SG4).
LNMINI	MININET line	Communication with the MININET protocol (SG2)
LNDCAN	Direct CAN line	Sending and receiving CAN messages
LNSNMP	SNMP line	Access to the SNMP variables of a B&R PLC.
LNADI	ADI line	Access to B&R Automation Device Interface (ADI) functions.
LNMTC	MTC line	Access to Maintenance Controller (MTC) functions
LNMODBUS	MODBUS line	Communication with MODBUS TCP controller.

Currently Pvi.py supports LNANSL, LNINA2 and LNSNMP only.

ANSL

Example:

from pvi import *
pviConnection = Connection() # start a Pvi connection
line = Line( pviConnection.root, 'LNANSL', CD='LNANSL')

Example:

from pvi import *
pviConnection = Connection() # start a Pvi connection
line = Line( pviConnection.root, 'LNINA', CD='LNINA2')

Example:

from pvi import *
pviConnection = Connection() # start a Pvi connection
line = Line( pviConnection.root, 'LNSNMP', CD='LNSNMP')