GE RPT 301 RPT 301 User Manual 15

RPT 301 User Manual 15

K177 Issue No. 3

For commands that have a reply string, the reply terminator <RT> is

always transmitted and is always <CR> followed by <LF>.

<RT> is expected with all commands but only shown in some of the

following sections for clarity (e.g.: Section 5.3 Diagnostics Mode).

Command Terminator

Command strings must end with the command terminator <CT>.

For Dumb Terminal applications press the carriage return (or enter)

key.

With a Terminal Emulator communications application, the

application must be set-up to give the required output when the carriage

return (or enter) key is pressed.

For Custom applications, <CR> (decimal 13) or <CRLF> (decimal 13

followed by decimal 10) must be added to the end of each complete

command string.

<CT> is expected with all commands except for some interactive

commands where further explanation is necessary (e.g.: Section 4 User

Calibration).

Error messages are generated from two sources:

a. The command decoder. A command error causes the return

of an error message and stops the rest of the command string.

The instrument sends an error message corresponding to the

command error.

b. A pressure sensor fault causes an error message to be sent.

Serious faults block the transmission of pressure data and

sends the error message in place of data.