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Model 11713A
Operation
Remote Mode (Cont'd)
LINE switch and the LOCAL pushbutton). The
LOCAL pushbutton can be disabled by a local
lockout command. The driver can be addressed to
listen and when addressed to listen, the Driver will
respond to the following messages: Data, Remote,
Local Lockout, Clear Lockout/Set Local, and
Abort.
Local-to-Remote Mode Changes.
The Driver
switches to remote operation upon receipt of the
Remote message. The Remote message has two
parts. They are:
• Remote enable bus control line (REN) set true
• Device listen address (MLA) received once
(while REN is true).
The Driver's outputs and all control settings re¬
main unchanged with the Local-to-Remote transi¬
tion. The REMOTE LED is on when the Driver is
in the remote state.
-Local Mode—-—-
Local Capability. In local, the Driver's front-panel
controls are fully operational and the instrument
-wiR-responid---tO"the—Remo^t-e—messa^er-Wh-ether-
addressed or not, it will also respond to the Local
Lockout, Clear Lockout/Set Local, and the Abort
messages.
Remote-to-Local Mode Changes. The Driver re¬
turns to local control upon receipt of the Clear
Lockout/Set Local message (REN). If the Driver is
not in Local Lockout, it switches to local from
remote when the front panel LOCAL key is
pressed. With the remote-to-local transition, the
Driver's outputs remain unchanged.
Local Lockout. The local lockout condition dis¬
ables the front panel LOCAL key so that pressing
the LOCAL key will not return the Driver to local
mode. When local lockout is in effect, the Driver is
returned to local under program control (sending
Clear Lockout/Set Local) or by turning the Driver
LINE switch OFF then ON.
NOTE
Returning to local by switching to OFF
then ON, will defeat the purpose of local
lockout and the system controller will
lose control.
-The- Drivers listen address- is-set
hy-
the slide
switches on the rear panel. Refer to the paragraph
The state of the Driver is controlled by Data, mes¬
sages on the HP-IB. Data messages include the
Driver's HP-IB Program Codes. The HP-IB Pro¬
gram Codes contain information for program¬
ming the front panel functions (except for the
LINE switch). The driver receives data messages
when addressed to listen.
Addressing
birfl.F-IBTAcfdress BelecHbn in Section lE
Data Messages__
3-2
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