Gpib Interface Functions; Gpib Addressing; Gpib Bus Function - AD Instruments AD2817C Manual De Usuario

AD2817C Operation Manual

5.2.2 GPIB interface functions

AD2817C's GPIB functions are listed in the following table.
Code
SH1 Complete Source Handshake capability
AH1 Complete Acceptor Handshake capability
T3 Basic Talker; Talk-Only; unaddressed if MLA; no serial poll
L3 Basic Listener; unaddressed if MTA; no Listen Only
RL1 Remote/Local capability
DC1 Device Clear capability
DT1 Device Trigger capability
C0 No Controller capability
E1 Drivers are open-collector

5.2.3 GPIB addressing

AD2817C's GPIB address is stored in non-volatile memory and can be set to any address
from 0 to 30 by front panel key entry in the System Config page. When AD2817C is
shipped from the factory, the default GPIB address is 8. For more information, refer to
" 4.2.16 GPIB Address".

5.2.4 GPIB bus function

AD2817C will respond to the following bus commands.
ABORT I/O (IFC)
z
ABORT I/O (IFC control line TRUE) halts all bus activity and deselects AD2817C.
DEVICE CLEAR (SDC or DCL)
z
This command can be used with an address to clear a particular device (SDC : selected
device clear) or used without an address (DCL : clears all devices). The Input buffer is
cleared, output data buffer is cleared and bit 4 (MAV bit) of the status byte is set to "0",
when AD2817A receives this command.
LOCAL (GTL)
z
LOCAL returns control of a listening device to front panel control.
REMOTE (RMT)
z
REMOTE sets AD2817C to the remote mode. When this command is sent, front panel with
the exception of LOCAL softkey will be disabled.
TRIGGER (GET)
z
It enables AD2817C to the TRIGGER bus command. This command may be sent to a
selected device or to all devices addressed as listeners on the GPIB bus. AD2817C must
first be addressed as a listener, second the trigger mode is set to the BUS trigger mode
before the trigger message is sent. This command is equal to the SCPI command
TRIG+FETCh? or the common command *TRG.
Function
49