MCC MIIC-203 Guía de usuario descargar pdf (Pagina 50)

Transmit or Receive operation.

Command: /Dxx[CR] 'Set Destination I

C Slave Address

Response 1: * 'iPort/AFM Ready

Response 2: /I89[CR] 'Invalid Command Argument

Default Setting: 00

Echo/Prompt Control

This command enables or disables data entry echo and prompts used as feedback to

manual operations from a computer terminal.

Command: /E[0|1][CR] 'Echo/Prompt Control [0 = Off, 1 = On]

Response: * 'iPort/AFM Ready

Default Setting: Off

RS-232 Flow Control

Select the serial communication handshaking protocol to be use in communicating

with the Host computer.

iPort/AFM implements either XON/XOFF (by default) or RTS/CTS flow control

protocols. Flow control is used by the iPort/AFM to limit character flow to and

from the Host computer to avoid overflowing internal communication buffers and

lost data.

The XON/XOFF protocol inserts characters directly into the ASCII data stream.

XON (Hexadecimal 0x11) is used to enable the flow of data. XOFF (Hexadecimal

0x13) is used to stop the flow of data.

The RTS/CTS protocol uses two additional wires in the cable connecting

communicating devices. The RTS wire is an output signal. It indicates that the

device generating the signal has buffer space available, and can receive data. The

CTS wire is an input signal. It indicates that the other device has buffer space

available, and can receive.

In general, XON/XOFF requires a minimal three-wire connection, Ground,

Transmit Data, and Receive Data. This protocol does insert control characters into

the stream of data, and may not be appropriate for all Host systems. If supported,

these control characters are normally automatically stripped out of the data stream

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MCC MIIC-203 Guía de usuario Pagina 50