Synapse SNAP Link, Руководство пользователя, Страница: 13 / 33

When EasySet finds a Synapse device, press the
Connect button. If it failed to find the correct
device type, press the Scan button to the right of
the port identifier. This will cause EasySet to
continue the scan.
If EasySet finds an attached device, but it’s not a SNAP Link, then
you will see this error message. Press Ok and then Scan again.
When successfully connected to a SNAP Link device, EasySet
populates the communication fields with the data currently set in
the SNAP Link device.
When the SNAP Link device is
powered up for the first time, you will see the factory default settings set
internally by the DIP switches. Once the configuration is changed by EasySet, the SNAP Link device will retain the
new configuration in flash memory.
Tab Bar
There are four tabs across the top of the window – Basic, UART, Pairing, and Advanced – which allow you to
match the communications settings of your SNAP Link adapter to that of the serial communications device to
which you are connecting.
Selecting Basic Communications Settin gs
Below the icons and immediately above the tab bar is the SNAP Link
adapter type: either RS-232 or RS- 485/422. To the right of that is the
adapter’s MAC (media access control) address. The same address is also
printed on a label on the bottom of the dev
ice.
Set the items under the Basic tab to match those of the serial
communications device you are connecting to your SNAP Link
adapter. In
this example we are attaching a device running at 9600 baud with 8 data
bits, no parity, 1 stop bit, and with flow
co ntrol enabled.
Network ID
The network ID can be thought of as a logical channel. This 16 - bit integer may be assigned any
hexadecimal value from 0x0001 through 0xFFFE. Devices in a SNAP network must share both
the same channel and same network ID to communicate. This allows multiple SNAP networks
to share the same channel if required, although it is preferred to place independent networks
on separate physical channels to reduce collisions. SNAP Link defaults to network ID 0x1C2C.
Channel
The channel number can range from 0 to 15. All SNAP Link devices that you wish to include in
the same network must be set to identical channel numbers. Due to FCC regulations, channel
15 provides slightly less output power than channels 0 to 14. Hence, in most cases i
t is
recommended to avoid using channel 15.
SNAP Link 9