Section 4 Initial Setting
4-6
4.2 Initialization of Message Exchange by DCL and
SDC Bus Commands
■ Format
DCL∆@select-code[primary-address][secondary-address]
■ Application example
DCL@1 Initializes message exchange for all devices on the bus.
(Issue of DCL)
DCL@103 Initializes message exchange only for the device at address 3.
(Issue of SDC)
■ Explanation
This function can be used when the MS9710C is controlled by a controller via the
GPIB interface bus.
This statement initializes message exchange for all device on the GPIB corre-
sponding to the specified select code or only for the specified devices.
The purpose of message exchange is to allow the controller to send new com-
mands when the controller cannot control message-exchange-related parts inside
the devices due to execution of programs although it is not necessary to change
the panel settings.
■ When only a select code is specified
Message exchange is initialized for all the devices on the GPIB corresponding to
the specified select code. DCL@ issues a DCL (Device Clear) bus command to
the GPIB.
■ When an address is also specified
Message exchange is initialized only for the specified device. Listeners on the
GPIB corresponding to the specified select code are canceled, only the specified
device is set as a listener, and an SDC (Selected Device Clear) bus command is
issued.
■ Items subject to initialization of message exchange
(1) Input buffer and output queue:
Cleared.
(2) Syntax analysis, execution control, and response generation
parts:
Reset
DCL @
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