Lake Shore Model 330 Autotuning Temperature Controller User’s Manual
Remote Operation
4-1
CHAPTER 4
REMOTE OPERATION
4.0 GENERAL
Either of the two computer interfaces provided with the Model 330 permit remote operation. The first is the
IEEE-488 Interface (Paragraph 4.1). The second is the Serial Interface (Paragraph 4.2). The two interfaces
share a common set of commands (Paragraph 4.3). Use only one of the interfaces at a time. See Paragraph
4.4 for a Serial Interface curve loading program.
4.1 IEEE-488
INTERFACE
The IEEE-488 Interface is an instrumentation bus with hardware and programming standards that simplify
instrument interfacing. The Model 330 IEEE-488 Interface complies with the IEEE-488.2-1987 standard and
incorporates its functional, electrical, and mechanical specifications unless otherwise specified in this manual.
All instruments on the interface bus perform one or more of the interface functions of TALKER, LISTENER, or
BUS CONTROLLER. A TALKER transmits data onto the bus to other devices. A LISTENER receives data
from other devices through the bus. The BUS CONTROLLER designates to the devices on the bus which
function to perform. The MPS performs the functions of TALKER and LISTENER but cannot be a BUS
CONTROLLER. The BUS CONTROLLER is the digital computer which tells the MPS which functions to
perform.
Below are Model 330 IEEE-488 interface capabilities:
•
SH1:
Source handshake capability
•
RL1:
Complete remote/local capability
•
DC1:
Full device clear capability
•
DT0:
No device trigger capability
•
C0:
No system controller capability
•
T5:
Basic TALKER, serial poll capability, talk only, unaddressed to talk if addressed to listen
•
L4:
Basic LISTENER, unaddressed to listen if addressed to talk
•
SR1:
Service request capability
•
AH1:
Acceptor handshake capability
•
PP0:
No parallel poll capability
•
E1:
Open collector electronics
4.1.1
IEEE-488 Interface Settings
If using the IEEE-488 interface, set the IEEE Address and Terminators. Press the
Address
key to show the
address (Ad) in the top display and the terminator in the lower display.
Hold the
Address
key and press the
s
key to increment the IEEE Address to the desired number, or the
t
key to cycle the terminators through CR/LF, LF/CR, LF, and End. Release to accept the changes (or current
setting) displayed.
4.1.2
IEEE-488 Command Structure
The Model 330 supports several command types. These commands are divided into three groups.
1.
Bus Control
– see Paragraph 4.1.2.1.
a.
Universal
(1) Uniline
(2) Multiline
b.
Addressed Bus Control
2.
Common
– see Paragraph 4.1.2.2.
3.
Interface
and
Device Specific
– see Paragraph 4.1.2.3.