Are sample applications provided with the SeaMAX driver?

  The SeaMAX Software package automatically installs several application samples with source code in the Example Projects subfolder. To access the samples from the Start Menu, click All Programs and locate the Sealevel Systems folder. In the SeaMAX subfolder, click on Documentation, and then click on the Example Projects Folder shortcut. Select your development platform […]

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Are Sealevel optically-isolated inputs active high or active low?

  It depends on how the input is wired to your application. An input is triggered when the input terminal and local common terminal of the Sealevel device detects a voltage difference greater than or equal to the input’s turn-on voltage – generally 3 VDC. The inputs are non-polarized so the voltage direction does not […]

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Are there sample applications provided with the SeaIO driver?

  The SeaIO software package automatically installs several application samples with source code in the samples subdirectory. To access to the samples, navigate to: [main drive]:Program FilesSeaIOSamples. For a listing and description of the samples, refer to the help file located at: Start > All Programs > SeaIO.

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Can I use Sealevel reed relay cards to switch other relays or inductive loads?

  Sealevel Digital I/O products with reed relays are not designed to switch inductive loads such as the coil on another relay. If you need to switch an inductive load, Sealevel recommends using a Digital I/O product with Form C relays instead. You should remember to place a diode parallel to the coil to suppress […]

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Can Sealevel relay racks be externally powered?

  Yes, all Sealevel relay racks allow an external power source to be connected to the V+ and Ground terminals. However, you need to take steps to prevent the external power source from back-feeding current into the Sealevel TTL I/O adapter connected to the relay rack. On single point discrete relay racks, you need to […]

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Do I need to add pull-up or pull-down resistors to my Sealevel inputs?

  No. Sealevel optically isolated and dry contact inputs are current-mode inputs, which do not require external pull-up (or pull-down) resistors to be added for most applications.1 External pull-up (or pull-down) resistors are generally required on voltage-mode inputs found on cheaper, non-isolated input devices. Voltage mode inputs require pull-up (or pull-down) resistors to hold the […]

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Do Sealevel SeaI/O data acquisition modules support third-party applications?

  Many third-party software packages (and PLCs) include support for the open and well-documented Modbus protocol. Sealevel SeaI/O modules use the Modbus protocol for communication and control. SeaI/O modules with USB, RS-232, or RS-485 interfaces use the Modbus RTU protocol. Ethernet and wireless SeaI/O modules use the Modbus TCP protocol. More information is included in […]

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Does SeaIO support Active X Controls?

  Yes. Supporting documentation is located in the help file when SeaIO software is installed. From the Start menu, locate the SeaIO folder and choose SeaIO Help. In the contents you will find a section titled “Active X Controls” that explains the Properties, Methods and Events for Active X I/O control.

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How can I expand the digital I/O in my APC NetBotz appliance?

  Sealevel SeaI/O devices offer flexible I/O expansion to APC Netbotz remote environmental monitoring equipment. All APC NetBotz appliances that have a USB port support SeaI/O 450U and 462U modules to expand the amount of digital I/O. SeaI/O 450U modules provide 16 Form C relay outputs useful for locking doors, turning lights on or off, and other […]

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