FAQs - Remote Monitoring

Profibus is a type of field bus typically used within control and automation.

Volt-Free Contacts (VFCs) are a pair of contacts that are normally open (NO) or normally closed (NC). When closed they form a circuit through which a current, and therefore signal, can flow for remote detection.

JBUS is a communications protocol that creates a hierarchical structure (one master and several slaves) from a single RS-232 communications link, similar to MODBUS.

Opto-Isolators are devices that use a short optical transmission path to transfer a signal between elements of a circuit while keeping them electrically isolated.

MODBUS is a communications protocol that creates a hierarchical structure (one master and several slaves) from a single RS-232 communications link, similar to JBUS.

Simple Network Management Protocol (SNMP) is a communications protocol that allows hardware with a TCP/IP connection on a network to be monitored and controlled.

RS-232 is a standard interface for synchronous and asynchronous communications up to 20kb/s between two compatible devices (one driver and one receiver) over distances up to 15m.

RS-422 is similar to RS-232 but up to a maximum transmission rate of 10Mb/s-100Kb/s, up to ten receivers from a single driver and a distance of up to 1000m.

RS-485 is similar to RS-422 but with up to 32 drivers and receivers.

UPS software for monitoring and management control is either supplied as a download service from a manufacturer’s website or on a CD-ROM inside the box the uninterruptible power supply was shipped in. The software is generally a single use license with additional licenses available upon request.