Siemens SIMATIC TIWAY 1 User manual

SIMA TIC TIW A Y 1
UNILINK Host Adapter
User Manual
Order Number: PPX:TIWAY–8121–2
Manual Assembly Number: 2587871–0045
Second Edition

UNILINK HOST ADAPTER1–1
USER MANUAL
CHAPTER 1
THE UNILINK HOST ADAPTER
1.1 INTRODUCTION
The UNILINK Host Adapter , Figure 1–1 is a second generation host computer
interface product that allows a host computer to operate and control secondary
devices on a TIW A Y I network. The UNILINK Host Adapter , also referred to as
the “adapter” in this manual, is a hardware and software extension of the
original TIW A Y I Host Adapter .
Figure 1–1 UNILINK Host Adapter

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1.2 FEATURES
The hardware is composed of the UNILINK Adapter , shown in Figure 1–1, with
a plug-in Personality Interface Module (PIM) PPX:500–6224. The PIM, shown
in Figure 1–2, contains the software that causes the UNILINK Adapter to
operate as the UNILINK Host Adapter .
Figure 1–2 Personality Interface Module (PIM)
Figure 1–3 illustrates the basic structure of the UNILINK Host Adapter. The
corresponding physical features are shown in Figure 1–4. It includes an
RS–232–C/RS–423–A compatible host port that supports the Non-Intelligent
Terminal Protocol (NITP) used by the original TIWAY I Host Adapter, or the
BDLC
protocol, an advanced, byte-oriented subset of the HDLC protocol. Also,
there are two TIW A Y I interface ports and an external I/O point block.

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Host
Computer
RS–232–C/RS–423A
Host
Interface
(Command Processor)
TIWA Y I
Interface External
Input Point Output Point
TIWA Y I
Network
Secondaries
UniLink
Host Adapter
Figure 1–3 UNILINK Host Adapter Block Diagram
Port
1Port 2Port 3Port 4AC NEUT AC LINE
GND
1 2 3 4 5
I/O
Host Computer Port Power Connections
TIWA Y I Ports External I/O Points
PPX:500–711 1, Dual Local Line media ports shown here.
Figure 1–4 UNILINK Host Adapter Physical Features

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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 A Y I features.
The adapter supports the TIW A 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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The adapter is configurable for a variety of applications needs and
includes multiple host computer support, allowing several host
computers to communicate with the secondary devices on the same
TIWAY I network.
The adapter provides transaction statistics collection to aid network
performance
tuning.
1.3 TYPICAL NETWORK APPLICATIONS
Figure 1–5 illustrates a typical single host network managing a process control
application. The host computer application directs the secondary devices
through the UNILINK Host Adapter and the TIW A Y I network. Commands are
provided for downloading or uploading data from the host computer to the
secondary
devices and for checking the status of an individual device.
Host
Computer
UNILINK
TIWAY I
UniLink Host Adapter ( MHU)
RS–232–C/RS–423–A
Host Interface Cable
Figure 1–5 Single Host Network

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The flexibility of the UNILINK Host Adapter also provides for multiple hosts as
illustrated in Figure 1–6. In addition to the process control application, your
main plant system can link to the same network to track work-in-progress,
adjust schedule loads for peak efficiency , and collect product cost data. W ith an
additional UNILINK Host Adapter, you can also add a personal computer
workstation to the network for statistical quality control or other uses.
Host
Computer
UNILINK
UniLink Host
Adapter (MHU)
Host
Computer
UNILINK
UniLink Host
Adapter (MHU)
Figure 1–6 Multiple Host Network

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1.4 TIWA Y I SYSTEM CHARACTERISTICS
TIW A Y I is a bus structure Local Area Network (LAN) designed for industrial
environments. The TIWAY I network connects a series of Texas Instruments
Programmable Controllers (P/Cs) and other devices to one or more host
computers. W ith the network, you can obtain, modify or replace data stored in
any of the following Siemens products:
SIMATICTI520/SIMATICTI530/
SIMATICTI520C/SIMATICTI530C P/Cs
SIMATICTI560/SIMATICTI565 P/Cs
 PM550/PM550C P/Cs
 5TI, Series 102, 103 P/Cs
IT–111, IT–121, IT–121A, IT150, and IT–160 Intelligent Tank
Transmitters (ITT s)
The P/Cs are connected to a TIWAY I network through Network Interface
Modules (NIMs). The PM550 P/C can also be connected with a Computer
Interface Module (CIM), but it limits the configuration choices. The UNILINK
Secondary Adapter is a TIW A Y I interface device that allows other devices, such
as the following, to be connected to a TIW A Y I network.
Robots
 Computer numerical controlled machines
Non-SIMA TIC programmable controllers
 Intelligent instruments
 Computer equipment
TIWAY I gateways are also available for connecting the Fisher, Foxboro, and
Honeywell networks to TIWAY I. However, you cannot use a gateway and a
UNILINK
Host Adapter in the same TIW A Y I network. TIW A Y I is designed to
satisfy today’s factory requirements for acquiring data and controlling
manufacturing processes. It is a noise-hardened serial binary communications
network that uses an advanced data link protocol.
Series 500 controllers can be connected with PEERLINKfor high speed
transfer of small amounts of data between controllers. The PEERLINK is a
solution for applications where one or more Series 500 controllers are
dependent
on high speed transfer of data from another Series 500 controller .

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With appropriate host software, an operator can program, monitor , and control
any P/C or other intelligent device on the TIWAY I network from a single
location.
The importance of the UNILINK Host Adapter is that it provides a
communication link between the TIWAY I network and one or more host
computers. Figure 1–7 is a diagram representing the various host computers
that can be connected to a UNILINK Host Adapter , and the typical devices that
can be controlled in a TIW A Y I network.
PC/
XT/
AT
ICC 6000
CVU5000
IBM
DEC
DEC
TIPC PDP–
11
UniLink
Host
Adapter
Y
/
X
S
E
R
T
E
S
1
IBM
Other
M
I
H
I
S
/
M
I
C
R
O
S
NIM
5TI
NIM
SIMATIC
TI520
NIM
SIMATIC
TI560
NIM
SIMATIC
TI565
TIWA
Y I
NIM
PM550
NIM
SIMATIC
TI530/
TI530C
NIM
Int.
Tank
Xmtr.
PEERLINK PEERLINK PEERLINK PEERLINK
Gateways
Fisher
Honeywell
Foxboro
Others
Map
Secondary
Adapter
Robots
CNC
Int. Scales
Other
Int. Devices
PC/
XT/
AT
Figure 1–7 TIWAY I Network
You cannot use a UNILINK Host Adapter in a TIWAY I network that also
contains a TIW A Y I Gateway or Network Control Module (NCM) or a TIW AY I
Host Adapter. Chapter 4 provides information on interfacing the adapter to a
TIWAY
I network.

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1.5 INSTALLATION
Instructions for installing the UNILINK Adapter and the UNILINK Host
Adapter PIM are given in the UNILINK Adapter Installation and Operation
Manual (PPX:TIWAY–8106). It provides the electrical and mechanical
installation instructions and guidelines for the the UNILINK Host Adapter .
Chapter 2 discusses the different operational modes and how they are
configured.
Chapter
3 discusses the host computer interface port, Port 3, and how to set the
dipswitches to establish communications.
Chapter 4 discusses the TIW A Y I interface ports, Ports 1 and 2, and how setup
your network.
1.6 TECHNICAL ASSIST ANCE
If you need assistance with the installation an operation of this equipment,
contact
your Siemens Industrial Automation, Inc. distributor or sales agent. If
you need assistance in contacting your distributor or sales office in the United
States, call 800–964–41 14.
1.7 CUSTOMER SER VICE CENTER
If you need assistance in placing an order, returning a product, or learning
about product availability, contact your Siemens Industrial Automation, Inc.
distributor or sales agent. If you need assistance in contacting your distributor
or sales office in the United States, call 800–964–41 14.