Prologix GPIB-USB Controller - EOI Detection Character Specification (eot_char); Interface Clear (ifc); Local Operation (loc); Listen-Only Mode (lon)

Prologix GPIB-USB Controller User Manual
4/19/2011 11
8.7. eot_char
This command specifies the character to be appended to USB output when eot_enable is
set to 1 and EOI is detected.
If the command is issued without any argument, the currently specified character is
returned.
SYNTAX: eot_char [<char>] where <char> is a decimal value less than 256
MODES AVAILABLE: CONTROLLER, DEVICE
EXAMPLES:
++eot_char 42 Append * (ASCII 42) when EOI is detected
++eot_char Query currently configured eot_char
8.8. ifc
This command asserts GPIB IFC signal for 150 microseconds making Prologix GPIB-
USB controller the Controller-In-Charge on the GPIB bus.
SYNTAX: ++ifc
MODES AVAILABLE: CONTROLER
8.9. loc
This command enables front panel operation of the currently addressed instrument.
SYNTAX: ++loc
MODES AVAILABLE: CONTROLLER
8.10. lon
This command configures the GPIB-USB controller to listen to all traffic on the GPIB
bus, irrespective of the currently specified address. This configuration is also known as
“listen-only” mode. In this mode, the controller can only receive, but cannot send any
data.
SYNTAX: lon [0|1]
MODES AVAILABLE: DEVICE
EXAMPLES:
++lon 1 Enable “listen-only” mode