Manual

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USB-RLY16L - Low Power 8 channel relay outputs at 16A

Technical Documentation

Overview

A low power version of the USB-RLY16 module, the USB-RLY16L is powered solely from the USB

bus and provides eight volt free contact relay outputs with a current rating of up to 16Amp each. The

relays are SPCO (Single Pole Change Over) types and provide position 0, position 1 and common pins

(latching relays and have no "normally open" or "normally closed" contacts) on the screw terminals

labeled as 0, C and 1 accordingly. The relays will also retain their state in the absence of power.

Operating Temperature

-40C to +70C

LED indication

The USB-RLY16L provides a red LED mounted immediately next to each relay to indicate whether it is

in a position 1 state (LED on) or position 0 state (LED off).

Relay power rating

If the relay is used at a voltage or current exceeding this specification, the life of the contacts may be

significantly shortened.

Summary of content (5 pages)

PAGE 1
USB-RLY16L - Low Power 8 channel relay outputs at 16A Technical Documentation Overview A low power version of the USB-RLY16 module, the USB-RLY16L is powered solely from the USB bus and provides eight volt free contact relay outputs with a current rating of up to 16Amp each.
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A full datasheet for the relays used on the USB-RLY16L is here: HFE20 datasheet First Step - Install the Driver The USB-RLY16L module uses the Microchip PIC18F14K50 to handle all the USB protocols. Before using the USB-RLY16L you will need to download the Devantech inf files and unzip them into a temporary folder. Connect the USB-RLY16L and windows will detect it and ask for the drivers. Point windows to the inf folder and it will install the driver. The USB-RLY16L will now appear as a com port.
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Commands The USB-RLY16L operates with an easy to use command set as described in the table below. Most commands are only a single byte and if applicable the USB-RLY16L will automatically send its response. The only exception to this being the "Set relay states" command which requires an additional desired states byte to be sent immediately after the command byte.
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107 108 110 111 112 113 114 115 116 117 118 6B 6C 6E 6F 70 71 72 73 74 75 76 Relay 7 to position 1 Relay 8 to position 1 All relays to position 0 Relay 1 to position 0 Relay 2 to position 0 Relay 3 to position 0 Relay 4 to position 0 Relay 5 to position 0 Relay 6 to position 0 Relay 7 to position 0 Relay 8 to position 0 Board dimensions Test program and example source code To get the USB-RLY16L up and running in the minimum amount of time we have put together an example program to demonstrate the functi
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Visual studio express examples Visual C# express The test program is available as a visual c# express built exe file here RelayModulesSetup.zip or as visual c# express project here RelayModulesSource.zip.