Synapse SNAP Link, Руководство пользователя, Страница: 16 / 33

not retransmit or rebroadcast the Master’s transmissions. Example: There are
four SNAP Link adapters in a lo ng linear line: Master, Client1, Client2 and Client3.
Master node transmissions do not get to the farthest Client (3), but it appears
Client1 could get it to Client2 and Client2 could get it to Client3 since each Client
is about 1/3 of the distance away from its neighbors. In this example, setting the
Master TTL to 4 on the Master adapter and setting Client 1 and Client 2 to ―On‖
for the Mesh Routing Initial Hop Limit should make sure all transmissions are
received.
Note: If you still have issues, please review the Modbus Firmware
appendix.
Mesh – No Mesh
Mesh Routing Settings – No Mesh
Setting the Mesh Routing Settings parameter to ―No Mesh‖ keeps
transmissions to a minimum, reducing interference and collisions that may add
lag, or delays, in the smooth
timing operation of your SNAP Link adapters
(sometimes referred to as a ―broadcast storm‖). Only enable mesh routing if
you have determined that you need some of your Client mode adapters to help
retransmit or rebroadcast transmissions in order for all Cl
ients to receive and
transmit their information.
Mesh – Mesh Defaults
Mesh Routing Settings - Mesh
These are the default parameters when you select ―Mesh‖from the Mesh
Routing Settings pull down menu. Selecting Mesh indicates that you want the
connecte d SNAP Link adapter to assume an additional role of ―transmission
repeater/router‖. As long as the Master adapter has the Multicast TTL (Master
Setting) assigned to a number larger than 1, all nodes with this ―Mesh‖ pull down menu selection will repeat
uni cast and multicast transmissions they receive.
Modbus Firmware (If Script has been loaded)
Modbus Firmware
A new tab called ―Modbus‖ has been added in the release of EasySet
V1.2.3 once a SNAP Link adapter has Uploaded the ―Modbus‖ script and
reset to fa ctory default. The new Firmware field denotes this connected
SNAP Link adapter has had the script uploaded by displaying ―Modbus‖
along with a new Modbus tab. The Modbus script enables a new hardened
wireless Modbus protocol that provides the highest reliability transport
along with the ability to fine
-tune the retransmissions and lag or latency
introduced by those retries. Please review the Modbus appendix later in
this document for more information.
12 SNAP Link