Siemens SIMATIC TIWAY 1 Manual de usuario descargar pdf (Pagina 5)

THE UNILINK HOST ADAPTER

UNILINK HOST

ADAPTER 1–4

USER MANUAL

The

features of the UNILINK Host Adapter include:



The adapter is noise hardened for factory floor use.

 There are internal diagnostics tests to check the internal operation

when

powered-up or reset, and during normal operation. There is also a

selectable

test mode that is set locally

 The adapter can be reset locally with an internal switch or remotely

with

a host issued command.

 The

adapter supports secondary-to-secondary communications without

complex

host software or additional hardware.

 The adapter is backward compatible with TIWAY I Host Adapter

software

and drivers.

 The adapter includes an independent host communications port

capable of serial communications at 38.4K baud. This port operates

simultaneously

with the network ports.

 This

host port provides an optional advanced host protocol for improved

throughput and data integrity. This protocol also allows up to 32

UNILINK Host Adapters to be multidropped (via a modem) from the

same

host computer RS–232–C/RS–423–A port.



The adapter supports or provides the following TIW

Y I features.

 The

adapter supports the TIW

Y I redundant media feature, providing

fault

tolerant communications in case of a media failure.

 The

adapter supports communication with multiple network secondary

devices

concurrently for higher network throughput.

 The

adapter supports concurrent network request processing. The host

computer

does not have to wait

for a request to complete before issuing

another request when using the advanced host communication

protocol.

 Commands are provided for background data collection. The adapter

can be configured to collect data for the host computer by storing the

most current data values in internal memory. Another command then

retrieves

the data.

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Siemens SIMATIC TIWAY 1 Manual de usuario Pagina 5

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