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Related Manuals for Synapse SNAP Link
Summary of Contents for Synapse SNAP Link
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Page 1: User Guide
SNAP Link Serial Wireless Adapter User Guide Wireless Technology to Control and Monitor Anything from Anywhere ™ Synapse Wireless, Inc. 500 Discovery Drive Huntsville, Alabama 35806 256.852.7888 www.synapse-wireless.com Document Number 600038-01C Contents SNAP Link User Guide... - Page 2 Copyright © 2010 Synapse Wireless, Inc., All Rights Reserved. All Synapse products are patent pending. Synapse logo, SNAP, and Portal are all registered trademarks of Synapse Wireless, Inc. 500 Discovery Drive Huntsville, Alabama 35806 256.852.7888 These devices comply with part 15 of the FCC rules. Operation is subject to the...
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Page 3: Table Of Contents
About Your SNAP Link Wireless Adapters SNAP Link Adapters Key Features of SNAP Link Document Conventions Download Supporting Materials Setting Up Your SNAP Link Wireless Adapters Modes of Operation SNAP Link State Indicators Changing SNAP Link States Pin Outs RS-232 (DB9F) Pin Outs... - Page 4 Signal Strength Problems Multiple Masters Can’t Find a Master Poor Performance Paired but not Communicating Frequently Asked Questions Appendices Mounting Options Modbus Firmware Advanced Management Specifications General Power Requirements Physical Properties RF (Wireless) Properties Antenna Certifications RS-232 Contents SNAP Link User Guide...
- Page 5 RS-485/422 Software Regulatory Information and Certifications RF exposure statement FCC certifications and regulatory information (USA only) Modifications (FCC 15.21) Declaration of Conformity Industry Canada (IC) certifications Contents SNAP Link User Guide...
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Page 7: About Your Snap Link Wireless Adapters
You can also configure your SNAP Link adapters using internal DIP switches in the event a computer running EasySet is not available. Key Features of SNAP Link Features SNAP®... -
Page 8: Document Conventions
SL232 device or the RS-485/422 terminal block of an SL485 device. ‣ The micro-B USB port of the SNAP Link adapter may be referred to as simply the USB port. ‣ The term RS-485/422 device or RS-232 device refers to the data communications device you are attaching to the SNAP Link adapter. -
Page 9: Contents
You can change the state of your adapter either by holding down the MODE button or by pressing it in rapid succession. There are three LEDs on a SNAP Link device. LED A is located on the front next to the MODE button. LEDs B and C are located on the back panel between the micro-B USB and serial connectors. -
Page 10: Changing Snap Link States
SNAP Link device will be married to, or paired with, another SNAP Link. The factory default serial port settings for all SNAP Link devices is 9600 baud, 8 data bits, no parity, and 1 stop bit. For SL232 devices flow control is disabled, and for SL485 devices flow control is always enabled. -
Page 11: Pin Outs
Hold down the MODE button for at least 5 seconds. When LED A turns red, release the MODE button. The unit drop any current pairing and will then begin looking for another SNAP Link unit with which to pair. Set a unit to multipoint mode While in broadcast state, press the MODE button 4 times in rapid succession (within 3 seconds). -
Page 12: Rs-485/422 Pin Outs
To wire a connection in two-wire mode, pick a pair of TX/RX pins – either 1 and 2 or 3 and 4. If your application requires a ground wire, sometimes referred to as 3-wire or 5-wire, then also include pin 5. Setting Up Your SNAP Link Wireless Adapters SNAP Link User Guide... -
Page 13: Snap Link Easyset Software
SNAP Link EasySet Software Synapse has developed an intuitive software application to help you configure your SNAP Link adapter. This software, known as SNAP EasySet, provides a graphical interface to access settings such as baud rate, flow control, and parity bits. - Page 14 Click Next to continue and follow the on screen installation instructions. First specify where EasySet should be installed, the default being the Synapse folder within Program Files. Then press Install and the software will be installed to the specified location.
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Page 15: Using Easyset
Upload SNAPpy Image – prompts EasySet to upload the SNAP Link operating software into the attached SNAP Link device. It will be necessary to do this only upon release of new SNAP Link software, or upon instruction by technical support. -
Page 16: Connect A Snap Link Device
Connect a SNAP Link device to your computer using the supplied USB cable. The micro-B side of the cable fits into the back of the SNAP Link device and the USB end fits into any standard USB port on your PC. This connection supplies power to the SNAP Link and also allows EasySet to communicate with it. -
Page 17: Selecting Basic Communications Settings
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. - Page 18 Baud Rate Set the SNAP Link baud rate to match that of your serial device. The baud rate for all devices can range from 0 to 115,200. While K-series adapters can send chunks of data in bursts up to 115,200, they safely sustain a maximum of 19,200 baud.
- Page 19 Mesh routing can be enabled, disabled, or set to custom. Enable mesh routing to allow a SNAP Link device to participate as a node in a wider SNAP mesh network. Mesh Routing Maximum...
- Page 20 Select ―One‖ to have the connected SNAP Link adapter limit Hops to Mesh Routing Initial Hop Limit ―1‖. A hop limit of ―1‖ directs a SNAP Link unit to request routing paths from other SNAP devices one hop away. It will automatically attempt to discover a routing path up to five hops away, if this initial one hop discovery fails.
- Page 21 Client mode adapters to help retransmit or rebroadcast transmissions in order for all Clients to receive and transmit their information. SNAP Link EasySet Software SNAP Link User Guide...
- Page 22 Mesh Routing Settings - Mesh Mesh Routing Settings pull down menu. Selecting Mesh indicates that you want the connected 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‖...
- Page 23 A new tab called ―Modbus‖ has been added in the release of EasySet Modbus Firmware V1.2.3 once a SNAP Link adapter has Uploaded the ―Modbus‖ script and reset to factory default. The new Firmware field denotes this connected SNAP Link adapter has had the script uploaded by displaying ―Modbus‖...
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Page 24: Uart Settings
Note that other events, controlled by Buffering Threshold and Inter- character Timeout, can also trigger the buffer of data to be sent. SNAP Link EasySet Software SNAP Link User Guide... - Page 25 Threshold is reached. Conversely, if the timeouts are high or disabled altogether, then data will be transmitted when the Buffering Threshold is reached. Setting a large Inter-character Timeout can give better multicast transparent mode reliability but with greater latency. SNAP Link EasySet Software SNAP Link User Guide...
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Page 26: Pairing Settings
Pairing Settings The Pairing tab indicates whether the SNAP Link adapter is paired with another adapter, which is denoted by displaying the other pair's SNAP address. State This is the paired state. The value can be: Simple Broadcast – Unit is in a reset state and is waiting to be ‣... -
Page 27: Advanced Settings
The Advanced tab contains a single checkbox labelled Button Lockout. When checked, the MODE button on the front of the SNAP Link adapter will be disabled. However, the MODE button can still be used to perform a reset, putting the... -
Page 28: Configuring Your Adaptor Using The Dip Switches
Changing DIP switch settings will override the default parameters, or parameters previously configured using the EasySet software. However, EasySet can also override the DIP switch settings. SNAP Link adaptors have built-in intelligence to determine if EasySet or the DIP switches were last used to change the configuration. -
Page 29: Dip Switch
DIP Switch 1 DIP switch 1 consists of 8 individual switches, which are applicable to all SNAP Link devices. All possible switch settings are shown in the tables below. This example indicates flow control off, 2400 BAUD, and SNAP channel 9. - Page 30 Configuring your Adaptor using the DIP Switches SNAP Link User Guide...
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Page 31: Dip Switch 2
Some device manufacturers might refer to these as 3-wire or 5-wire. This is referring to the same settings described above, but are including the ground wire in their specification. Configuring your Adaptor using the DIP Switches SNAP Link User Guide... -
Page 32: Application Usage Scenarios
Buffering Threshold – the minimum number of characters to enqueue before the buffer is transmitted. ‣ SNAP Link contains a 123 byte buffer, but that must include a 12 byte header when in multipoint mode and a 15 byte header when in point-to-point mode. The default value is 100. Values over 100 are not recommended, especially at high baud rates, because the buffer could be overrun resulting in dropped characters. -
Page 33: Scenario 2: File Transfer, Continuous Stream
Inter-character Timeout – This parameter should be smaller than the Buffering Timeout to force transmission of very small payloads with pauses between them. In this scenario, set this parameter at about half of the Buffering Timeout setting. Application Usage Scenarios SNAP Link User Guide... -
Page 34: Troubleshooting
Multiple Masters In a multipoint network, if SNAP Link devices are unable to pair with a master, check for the presence of multiple masters. There can be only one master in a multipoint network. If you wish to operate multiple masters within the same vicinity, then be sure to set each master to a different channel and/or network ID using either EasySet or the DIP switches. -
Page 35: Can't Find A Master
‣ Try adjusting the antennas as described above. Poor Performance If you believe your SNAP Link adapter are not performing adequately, this could be caused by a number of factors, such as: ‣ Poor signal strength – try adjusting the antennas as described above. -
Page 36: Frequently Asked Questions
RS-485 device from the SNAP Link provided power source. If I power off and power back on a SNAP Link product, does it forget the configuration changes I have previously applied, such as baud rate, parity, flow control, UART parameters, channel, or network ID? ★... - Page 37 I need to replace the master SNAP Link unit in a multipoint setup that has been working. Must I reset each device, or can I merely set up the new master? ★ You will need to perform a simple one-button process at each slave. This is by design since you wouldn’t want slave devices to automatically switch to a new master if one were one to be powered up...
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Page 38: Appendices
Appendices Mounting Options SNAP Link devices can sit on a table top or be wall mounted using the included mounting brackets. To install the brackets, one of the end panels must be removed and the brackets slid into place. There are two mounting brackets, one for each side of the SNAP Link box. -
Page 39: Modbus Firmware
Modbus Firmware With the release of EasySet V1.2.3, SNAP Link adapters can load a new version of script firmware to increase the reliability of wireless transmissions, by allowing an automatic number of retransmissions by the Master adapter. This multicast retry feature ensures the master continues to retransmit a command if no response is received due to the original transmission. - Page 40 If a Master adapter has to retry to the maximum number set, it will incurr a lag in milliseconds equal to the following formula: “Delay between retries” * “Retry Count” = “Maximum milliseconds of lag potentially added after each Modbus command is transmitted. Appendices SNAP Link User Guide...
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Page 41: Advanced Management
Advanced Management The SNAP Link EasySet software was designed to set up SNAP Link adapters quickly and easily. However, if you should encounter situations where a more powerful tool is needed, Synapse Wireless offers Portal™, an advanced SNAP network Administration tool, as a free download from the web site. To access the download you will need to register on the Synapse forum site at: forums.synapse-wireless.com/register.php... -
Page 42: Physical Properties
Up to 3 miles Line of Sight (LoS) antenna) wireless rate LoS (1.5 miles at 2 Mbps wireless rate LoS) RF Transmit Power 63 mW (18 dBm) 63 mW (18 dBm) Receive amplifier Gain 10 dBm 10 dBm Appendices SNAP Link User Guide... -
Page 43: Antenna
RoHS (lead free) Compliant Energy Star Compliant IC Certification RS-232 SL232K SL232M Connector DB9F DCE DB9F DCE Data bit; Parity; Stop bit 7, 8; no parity, even, odd; 1 7,8; no parity, even, odd; 1, 2 Appendices SNAP Link User Guide... -
Page 44: Software
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: ‣ Reorient or relocate the receiving antenna. Appendices SNAP Link User Guide... -
Page 45: Modifications (Fcc 15.21)
FCC ID. Modifications (FCC 15.21) Changes or modifications to this equipment not expressly approved by Synapse Wireless, Inc. may void the user’s authority to operate this equipment. Declaration of Conformity (In accordance with FCC 96-208 and 95-19) Manufacturer’s Name:... -
Page 46: Industry Canada (Ic) Certifications
Synapse Wireless, Inc. declares that the products: Product Name Model Number SNAP Link RS232 SL232K-001 SNAP Link RS485/422 SL485K-001 To which this declaration relates, meet the requirements specified by the Federal Communications Commission as detailed in the following specifications: ‣...
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