ST2523 Series Operation Manual Ver1.2
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6.2.1
GPIB Interface Functions
The following cable shows the ST2523 GPIB interface functions:
Code
Capability
Function
SH1
Data Source Handshake
Three-wire Shake
AH1
Acceptor Handshake
Three-wire Shake
T5
Basic Talker
Transmit instrument data.
L4
Basic Listener
Receive instrument data.
SR1
Service Request
Request service.
RL1
Remote/Local Conversion
Remote/Local Conversion
DC1
Device Reset
Transmit clear signal.
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
ST2523 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 ST2523 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.
