1-4-2 Basic Procedure (Basic Mode Data Transmission Control Procedure)

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1-4-2 Basic Procedure (Basic Mode Data Transmission Control Procedure)

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1-4-2 Basic Procedure (Basic Mode Data Transmission Control Procedure)

Basic procedure (or basic mode data transmission control procedure) is a method of transmitting data in units of blocks and performing control by using transmission control characters. Basic procedure is an interactive transmission control procedure in which subsequent processes are performed after the partner’s response is waited for.

Original Basic Procedure (Basic Mode Data Transmission Control Procedure) source table or explanation box, preserving its complete original arrangement, labels and values. Source text: SYN synchronization method Synchronous control (character synchronization method) Error control Parity check (horizontal/vertical parity) — p. 307 · Enlarge

(1) Transmission control characters

In the basic procedure, a total of ten transmission control characters that are shown below are used. The transmission control characters are special codes that are defined in the 0 column and the 1st column of the character code.

(2) Transmission message

In the basic procedure, information is handled in units of messages. A message is divided into blocks, and information is transmitted in units of blocks.