Rockwell-automation 1760-xxxx Pico GFX-70 Controllers User Manual Uživatelský manuál stáhnout pdf (Strana 308)

Publication 1760-UM002B-EN-P - March 2005

6-2 Pico-Link and Point-to-Point Serial Connections

Pico-Link Topologies,

Addressing and Functions

The Pico-Link allows the configuration of a line topology. There are two

wiring methods which can be used for the required addressing options:

• “Loop through the unit” wiring arrangement,

• Wiring arrangement using a T connector and a spur line.

Loop Through the Unit Wiring Method

With this wiring method it is possible to implement the addressing of the

stations via station 1 or the PicoSoft Pro. If the line is interrupted, the network

is no longer operational from this point in the network.

T-Connector and Spur Line

Each device must be addressed individually with this wiring method by:

• Downloading the program

• Downloading the address with PicoSoft Pro

• Using the display or

• The device is already assigned an address.

If a spur line is removed on a station, all other devices in the network remain

functional.

IMPORTANT

CAN has been used as the basis for the design of the

Pico-Link. The messages have been adapted and

optimized to suit the requirements of the Pico GFX-70

environment.

IMPORTANT

The spur line between the T connector and the

device must not exceed 0.3 m. Otherwise

communication via the Pico-Link may be impaired.

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