Anritsu MS8608A, Operation Manual, Page: 253 / 338

SECTION 5 INITIAL SETTINGS
5-5
Initialization for Message Exchange by DCL and SDC Bus
Commands
■
Example
Initializes all devices on the bus for message exchange (sending DCL).
board% = 0
addresslist% = NOADDR
CALL DevClearList(board%, addresslist%)
Initializes only the device at address 3 for message exchange (sending SDC).
board% = 0
address% = 3
CALL DevClear(board%, address%)
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Explanation
This function can be used when the GPIB interface is used to control the MS8608A/MS8609A from the
controller.
This statement executes initialization for message exchange of all devices or a specified device on the GPIB
having the specified select code.
■
Items to be initialized for message exchange
When the MS8608A/MS8609A accepts the DCL or SDC bus command, it does the following:
(1) Input Buffer and Output Queue:
Clears them and also clears the MAV bit.
(2) Parser, Execution Controller,
and Response Formatter:
Resets them.
(3) Device commands including
∗
RST: Clears all commands that prevent these commands from
being executed.
(4) Processing of the
∗
OPC? command: Puts a device in OCIS (Operation Complete Command Idle
State). As a result, the operation complete bit cannot be set
in the Standard Event Status Register.
(5) Processing of the
∗
OPC? query:
Puts a device in OQIS (Operation Complete Query Idle State).
As a result, the operation complete bit 1 cannot be set in the
Output Queue.
(6) Device functions: Puts all functions associated with message exchange in the
idle state. The device continues to wait for a message from
the controller.
CAUTION
The following are not affected even if the DCL and SDC commands are processed.
(1) Current data set or stored in the device
(2) Front panel settings
(3) Status of status byte other than MAV bit
(4) Device operation in progress