Siemens SIMATIC TIWAY 1 Especificaciones Pagina 21

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Getting Started
2–6
Getting Started
What can I use as a network slave station?
One of the benefits of DirectNET is many of the DirectLOGIC CPUs already have
built-in DirectNET ports that can communicate up to 19.2K baud, (38.4K for the
DL340). The following CPUs have this feature.
S DL430, DL440
S DL340
S DL240
Each DirectLOGIC product family has a general purpose communications
interface. A DCM for the DL405 and DL205 CPUs and a DCU for the DL305 CPUs.
You can use any of the DirectLOGIC PLCs with their appropriate communications
interface as a slave station. A few reasons to use a communication interface are:
S The communication interfaces (except for the DL305 DCU) allow baud
rates of up to 38.4K baud.
S You can leave the CPU built-in port open to attach an operator interface
or programming device.
The following communications interfaces are available.
S D4–DCM (with DL405 CPUs)
S D2–DCM (with DL205 CPUs)
S D3–232–DCU and D3–422–DCU (with DL305 CPUs)
In a slave station, the DCM responds to requests from the network master station.
Read
Write
Data
Data
PLC Requests
Data Tranfer
Data
In a slave station.....
responds to
network requests
Request
Response
(a DCU may or may not be required
depending on the DL305 CPU model chosen.
There are also many compatible products from the following families that will
communicate over DirectNET.
S GER Series 1R
S Texas Instruments TI305R and TI405R
S SimaticR TI305 and TI405
CPUs with Built-in
DirectNET Port
Data
Communications
Modules and
Data
Communications
Units
Compatible
Products
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