Prologix GPIB-USB Controller Manuel d'utilisateur télécharger pdf (Page 12)

Prologix GPIB-USB Controller User Manual

9/15/2009 12

++mode 0 Switch to DEVICE mode

++mode Query current mode

8.11. read

This command can be used to read data from an instrument until:

• EOI is detected or timeout expires, or

• A specified character is read or timeout expires, or

• Timeout expires

Timeout is set using the read_tmo_ms command and applies to inter-character delay, i.e.,

the delay since the last character was read. Timeout is not be confused with the total

time for which data is read.

SYNTAX: ++read [eoi|<char>] where <char> is a decimal value less than 256

MODES AVAILABLE: CONTROLLER

EXAMPLES:

++read Read until timeout

++read eoi Read until EOI detected or timeout

++read 10 Read until LF (ASCII 10) is received or timeout

8.12. read_tmo_ms

This command specifies the timeout value, in milliseconds, to be used in the read

command and spoll command. Timeout may be set to any value between 1 and 3000

milliseconds.

SYNTAX: ++read_tmo_ms <time> where <time> is decimal value between 1 and

3000

MODES AVAILABLE: CONTROLLER

8.13. rst

This command performs a power-on reset of the controller. The process takes about 5

seconds. All input received over USB during this time are ignored.

SYNTAX: ++rst

MODES AVAILABLE: CONTROLLER, DEVICE

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Prologix GPIB-USB Controller Manuel d'utilisateur Page 12