7.3 Date configuration

1 Start bit

2 Data bit (+ parity bit)

3 Stop bit ( 1 or more )

(1)Start Bit

In 1/2 bit from the mark-to-space starting edge, state is read once again. When "space" state is confirmed, it is recognized as the start bit. If it is "mark" state, it is not taken as the start bit. Without taking it as an error, detection of a start bit is carried out once again.

(2)Data Bit + Parity Bit

Data bit and parity bit are sampled at 1/2 start bit for time length equal to 1 bit. The state thus sampled is taken as the data for the bit concerned. Bits are named as

Bit 0, Bit 1, ..... parity bit counted from the one close to the start bit.

(3)Stop Bit

The stop bit is a mark level of 1 bit or more. With "space" having been detected on detection of a stop bit, framing error takes place.

7.4Error detection

Parity, framing, and overrun are detected. On detection of any error, the data are stored in the buffer as "?".

(1) Framing Error

With "space" state having been detected on detection of a stop bit, error takes place. The data are stored in the buffer as "?".

(2) Parity Error

With an error having been detected under specifying parity check, the data is stored in the buffer as "?".

(3) Overrun Error

On detection of an overrun error, the data are stored in the buffer as "?".

CITIZEN

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Citizen Systems CBM-291 user manual Date configuration, Error detection
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CBM-291 specifications

The Citizen Systems CBM-291 is a versatile and high-performance thermal printer designed for a wide range of printing applications. Known for its reliability and efficiency, this printer is particularly favored in environments requiring seamless ticketing, receipts, or labels.

One of the standout features of the CBM-291 is its advanced thermal printing technology. Utilizing direct thermal printing, the printer eliminates the need for ink, toner, or ribbons, which reduces both operational costs and maintenance efforts. This makes the CBM-291 an eco-friendly choice while delivering high-quality prints with crisp and clear text, barcodes, and graphics.

The printer offers a high-speed printing capability, with a maximum print speed of 200 mm per second. This ensures swift transactions, making it ideal for retail, hospitality, and transportation sectors where fast service is essential. Additionally, the CBM-291 boasts a resolution of 203 dpi, ensuring that all printed material meets professional standards.

Furthermore, the CBM-291 features a compact design that allows for easy integration into various workspace environments. It comes with flexible connectivity options, including USB, RS-232, and Ethernet interfaces, enabling seamless connection with a variety of devices such as POS systems, computers, and mobile devices. This versatility allows businesses to adapt the printer to their existing systems without significant modifications.

Another important characteristic of the CBM-291 is its user-friendly interface. The printer includes an easy-access paper compartment and a simple drop-in mechanism that allows for quick paper loading. This design minimizes downtime and enhances productivity by allowing users to change rolls quickly.

Durability is also a key aspect of the CBM-291. Constructed to withstand various operational demands, it features a robust housing that protects it from the typical wear and tear encountered in busy environments. Additionally, the printer offers a long lifespan, minimizing the need for frequent replacements.

In summary, the Citizen Systems CBM-291 combines advanced thermal printing technology, high-speed performance, versatile connectivity, and user-friendly features to meet the diverse needs of modern businesses. Its reliability and efficiency make it an excellent choice for any setting requiring dependable printing solutions.
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