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Appendix
B
Details
of
Initialization Command Functions
B.l
Initializing
Bus
IFC:
Initializes functions of all the devices connected
mounted.
the GPIB bus line, when the GPIB option is
Initialization of the interface function refers to an action of canceling the status of the interface function
of the device set by the controller and returning it to the initial status. Each function inarked with a
check mark
(4)
in the table is initialized. The function marked with a delta
(A)
means that the function
will be partially initialized. This command has no effects on the operation status of the device.
Table
B-1
Changes in Status of Interface Functions by IFC Message
I
No.
/
Function Cord Initialization bv IFC
1
I
I
I
Source handshake
1
SH
1
d
I
1
2
1
Acceptor handshake
1
AH
1
V
I
1
3
1
Talker or extens~on talker
1
TorTE
1
\I
I
1
6
1
Remote local
1
RL
1
I
4
5
Listener or extension listener
Service request
7
8
The following table shows changes in status of the device by the
IFC
message.
Table
B-2
Changes in Status of Device by IFC Message
9
10
--
IFC Message
Changes in Status of Device
L or
LT
SR
Parallel port
Device clear
TalkerListener
All the talkers and listeners switch into the idle state (TIDS and LIDS) within
100
ps.
v
A
PP
DC
Device trigger
Controlle
Controller
Unless the controller is active (SACS: System control
Active State), the controller switches
into the idle state (CIDS: Control IDle State) within
100
ps.
DT
C
Device of service request Although the state where the device is sending an SRQ message to the controller (state
where the SRQ line is set by the device to the
LOW
level) is not canceled, the message
cancels the state where the controller have all the devices under the system bus in the serial
pole mode.
d
-
-
Dev~ce In remote mode
Dev~ces currently In the remote mode will not be released from the remote inode by the IFC
me\sage.