TH2523 Series Operation Manual
Ver1.2
44
Code
Capability
Function
DT1
Device Trigger
Transmit trigger signal.
C0
Control
Transmit control data.
Table 6-2 GPIB Interface Capabilities and Functions.
6.2.2
GPIB Addressing
User can set the bus mode address of the GPIB parallel communication interface to a value
from 1 to 31. For more details about address setup, please refer to the page of <SYSTEM
SETUP> under the [SYSTEM] menu.
6.2.3
GPIB Bus Commands
TH2523 will respond to the following bus commands:
ABORT I/O
（
IFC
）
When this command is received, all bus activities will abort and the instrument will
no longer receive data and reset the interface to the idle mode.
CLEAR LOCKOUT/SET LOCAL
This command provides conditions for the instrument to operate remotely.
DEVICE CLEAR
（
SDC or DCL
）
As soon as this command is received, the selected device or all devices connecting
with this interface will be cleared.
LOCAL
（
GTL
）
LOCAL returns to local control and buttons on the front panel will be valid.
LOCAL LOCKOUT
（
LLO
）
LOCAL LOCKOUT disables the LOCAL operation of all devices on the bus. After
this command is sent, you will be unable to operate TH2523 from the front panel
including the soft key LOCAL. Execute the LOCAL command to undo LOCAL
LOCKOUT.
REMOTE
Set the control mode as remote control.
SPOLL
The SPOLL (serial poll) command is set the bus address status byte. 8 bytes are used
to shield, read and judge the instrument operating status.
SERVICE REQUEST
When TH2523 requires the controller to execute a task, it will send out a SRQ
service request control signal. SRQ, deemed as an interruption, will inform the
controller to prepare the transmitted data or that errors exist on the instrument. As
