5.4 Command Summary
59
|
www.lakeshore.com
D
Not initiate communication more than 20 times/s
When issuing queries or queries and commands together, the user program should:
D
Properly format and transmit the query including the terminator as 1 string
D
Prepare to receive a response immediately
D
Receive the entire response from the instrument including the terminator
D
Guarantee that no other communication is started during the response or for
50 ms after it completes
D
Not initiate communication more than 20 times/s
Failure to follow these simple rules will result in inability to establish communication
with the instrument or intermittent failures in communication.
5.4 Command
Summary
This paragraph provides a listing of the IEEE-488 and serial interface commands. A
summary of all the commands is provided in TABLE 5-7. All the commands are
detailed in section 5.4, which is presented in alphabetical order.
Sample command format
SETI <current>[term]
SETI
Brief description of command
Command name
Form of the command input
Syntax of user parameter input
see key
Definition of parameter
Input:
Format:
Remarks:
±nn.nnnn
<current> Specifiesoutput current setting:
0.0000 - ±60.1000 A.
Output Current Setting Command
Sets the current value that the output will
ramp to at the present ramp rate. Setting
value limited by LIMIT
Sample query format
SETI?
[term]
SETI?
Brief description of query
Query name
Form of the query input
Definition of returned parameter
Syntax of returned parameter
Input:
Format:
Returned:
±nn.nnnn
(Refer to command for description)
<current>[term]
Output Current Setting Query
Interface commands key
Q
Begins common interface command
?
Required to identify queries
s[n]
String of alphanumeric characters with length “n.” Send these strings
using surrounding quotes. Quotes enable characters such as commas
and spaces to be used without the instrument interpreting them as
delimiters.
nn…
String of number characters that may include a decimal point.
dd
Dotted decimal format, common with IP addresses. Always contains 4
dot separated 3-digit decimal numbers, such as 192.168.000.012.
[term]
Terminator characters
<…>
Indicated a parameter field, many are command specific.
<state>
Parameter field with only On/Off or Enable/Disable states.
<value>
Floating point values have varying resolution depending on the type of
command or query issued.
FIGURE 5-8
FIGURE 5-9
TABLE 5-6
