The serial interface | Interfacing the XMP 2600 |
The serial interface
The Serial Interface is RS232 hardware interface with three types of operating modes: Monitor Mode, Remote Terminal Control Mode and Remote Computer Control Mode.
Serial
Interface
Capabilities
Computer
Versus
Terminal
Operation
Pressing the terminal’s ENTER key while the Serial Interface is in Monitor Mode and the GPIB Interface is OFF will cause the Serial Interface to switch to the Remote Terminal Control Mode.
In addition to the Transmit and Receive lines, the interface implements the following hardware handshake lines:
DTR | Data Terminal Ready. |
CTS | Clear To Send. |
RTS | Request To Send. |
DCD | Data Carrier Detected. |
The interface has the following programmable parameters:
Baud Rate | 2400, 4800, 9600. |
Xon/Xoff | Yes, No. |
Stop Bits | 1 or 2 depending on the Parity settings. |
Parity | Odd, Even, None. |
Echo | Yes, No. |
The number of Start Bits is fixed at 1.
The Serial Interface Parameters are set in the SERIAL
The Serial Interface always uses “hardware handshake” (signals CTS and RTS). If you do not wish to utilize those signals, short pins 7 and 8 of the connecting cable, on the XMP’s side (see the User’s Guide for further details).
The selection of the ECHO parameter determines the Remote Control Mode of operation by changing some aspects of the behavior of the Serial Interface, as detailed below:
echo | Yes (terminal) | No (computer) |
|
|
|
echo | echo each received character | no echo |
|
|
|
prompt | '>' | {ACK} |
|
|
|
SRQ string | '{bell}SRQ<' | 'SRQ<' |
|
|
|
terminators | {CR} echoed as {CR}{LF} | {CR}{LF} or {LF} |
|
|
|
In the Computer Remote Control mode of operation, the XMP 2600 will respond to each command string with an ASCII {ACK} - 06 HEX.
2 | XMP 2600 Programming Manual rev. 1.1 |
