Chapter 10
Transparent Mode
The A2400 is an
In normal operation the A2400 communicates with the host on a polling system; that is, each module responds to its own unique address and must be interrogated by the host. The microprocessor in the A2400 examines any character transmitted to it by the host computer. When the microprocessor detects a valid prompt character ($ or #), it traps the prompt and examines the next characters for a valid address and a valid command. This simple command/response protocol must be strictly observed to avoid communi- cations collisions and data errors.
In the transparent mode the module acts like an open gate for information. Any data presented at the input to the module will be passed on regardless of protocol.
A device that is half duplex and uses a
Transparent Mode Functions
In the transparent mode the A2400 provides the user with the following functions:
1.Ready To Send (RTS) and Clear To Send (CTS) handshaking signals for
2.Networking capability for
3.