Control and monitor up to 32 channels of buffered drive TTL digital I/O via any 10/100BaseT Ethernet connection with the eI/O-160E digital I/O module. The eI/O module addresses the 32 channels of I/O as four eight-bit ports, each programmable as input or output. A 50-pin header connects the module to industry-standard solid-state relay racks to provide PC-based control of equipment including sensors, switches, security control systems, and industrial automation systems. For convenience, +5 VDC power is provided on the 50-pin connector.
The eI/O-160PoE has all the features of our eI/O-160E module and is a Class 0 (IEEE 802.3af-2003) Power over Ethernet device. This allows power and data to be transferred over a single CAT5 cable and eliminates the need for an external power supply.
Sealevel's eI/O modules provide system designers with a compact, cost-effective alternative for monitoring and control. They are perfect for a wide variety of applications including process control, test & measurement, security, and broadcast automation.
Tech Lowdown: Why does my Sealevel Digital I/O TTL adapter have 5 volts present after system power on?
TTL I/O devices are commonly used to control solid-state relay modules that interface a variety of input and output devices. An important consideration in these applications is to make sure that the solid-state outputs are properly configured before being energized.
Solid-state relays operate using negative logic, where the off state (logic 0) is 5V. Sealevel TTL devices adhere to the Opto22 standard for solid-state relays and are designed to power up in the off state by having 5V present on all I/O pins at start-up. This prevents unintended activation of connected negative logic devices.
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