Starret DataSure, Руководство оператора

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DataSure™ Operators Manual 8 PT 6*****
Placement of the network routers to achieve the best reach or range, but redundancy is generally
affected.
Routers in this ‘string arrangement’ fall outside the definition of Mesh network topology, but
remain compatible with and support the network as a whole (See HYBRID MESH - STRING
networks below). STRING routing, while not a MESH, does offer additional network flexibility
in layout for remote buildings or measuring stations away from the general area.
Product Note: With the Starrett DataSure™, multiple networks can exist and operate under one
roof, but must have separate Group Numbers
.
For example, in-line routing may be required in applications that follow a common line or
STRING, such as a production aisle where measuring stations flank both sides of the way. Other
applications where a common in-line system may be required are building-to-building networks,
remote measuring, and portable or ad hoc networks.
1.5.3 Hybrid MESH - STRING Networks
Networks consisting of both MESH and STRING combinations assure added flexibility needed
to meet specific user needs. The characteristics of the MESH and STRING layouts remain the
same as discussed above.
A Hybrid MESH and STRING network can be laid out to employ the mesh network attributes in
a common geographical area, while providing a string of routers to achieve additional reach or
range. User environments that might require a combination network would include access to
multiple buildings, work cells separated by large obstructions, remote measurement, parking
areas separating common operations, QA lab separated by production areas, and large electrical
interference fields.
1.5.4 Network Options
Covering large geographical areas is sometimes necessary but can be expensive to deploy the
many routers required to cover that space with adequate radio coverage.
Further, additional network traffic generated by the routers and the continual updating of each
node increase as the mesh becomes larger. This can result in unsatisfactory network
performance. When performance or cost is a concern, multiple work cells across a production/lab
area need not deploy a single, large and fixed network. Conflicting requirements in metrology
methods or budgets may also preclude a single ubiquitous
DataSure™
.
When autonomous operations or unrelated work cells have no need to have combined wireless
network management and/or data collection capabilities, then it may be prudent to install
multiple and separate
DataSure™
systems. Since the Starrett
DataSure™
systems may have
wired IP network (LAN) connectivity, measurement data can be merged in a common, LAN
based database or file server, if needed. In this scenario, the individual networks can be made
more efficient than a single large mesh and have the benefit of lower cost.
1.5.5 Determining the Network Layout