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A-10 MS-Connect 210 User’s Manual

Glossary of Terms

Appendix G — Glossary of Terms

Aux RS-232

—The connection between a reader’s auxiliary port and a host. The MS-Connect

210 passes the RS-232 signal through, creating a condition in which the host’s RX/TX is

connected directly to the reader.

Baud Rate—The number of discrete signal events per second. Bits per second.

Connector

—Physical device (plug or socket) on a device or cable to provide in/out connectivity

for various circuits and pins.

Data Bits—The number of bits used to represent one character of data output.

Decode—A Good Read. The successful capture and output of the information encoded in

a symbol.

Discrete I/O—Inputs and outputs characterized by discrete signal transitions from one

voltage level to another so that digital switching can occur.

Firmware—Software hard-coded in non-volatile memory.

Good Read—A decode. The successful capture and output of the information encoded in

a symbol.

Host—A computer, PLC (Programmable Logic Controller), or other device that is used to

execute commands and to process data and discrete signals.

Host RS-232—Enables a reader to communicate with a host although they are not directly

connected. The reader is routed through the MS-Connect 210, and then to the host.

Host RS-422—The RS-422 connection between the MS-Connect 210 and the host. The

MS-Connect 210 converts the RS-232 interface to RS-422 between the reader and the

host.

Input—A channel or communications line. The decoded data or discrete signal that is

received by a device.

LED (Light-Emitting Diode)—Often used as a performance indicator, as on the exterior of

the MS-Connect 210.

Master Symbol—A symbol whose data is stored in a reader and compared to other

symbols in an application as they are decoded. Useful in applications that require sortation

and routing.

Matchcode—A method of comparing current decoded symbol data against stored master

symbol data. Useful in applications that require sortation and routing.

Micro-Change—A threaded, sealed connector that provides secure cabling in industrial

and automation environments.

New Master—A condition in which a reader decodes and stores a new master symbol in

an application using matchcode.

No Read—A condition in which a reader fails to decode a candidate symbol.

Normally Closed—A discrete output state that is only active when open.

Normally Open—A discrete output state that is only active when closed.

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Microscan MS-4X Manual de usuario Pagina 60