MFC-CB™ Operation and Maintenance Manual
©2001~2007
DH Instruments, a Fluke Company
Page 56
4.3.5
COMMAND DESCRIPTIONS
Each command description gives the full syntax showing usage. Ranges of parameters or
parameter types are indicated. There are two types of commands. The Common and
Status Commands support IEEE STD. 488.2, while the MFC-CB commands access all
other functions.
4.3.5.1
IEEE STD. 488.2 COMMON AND STATUS COMMANDS
The MFC-CB supports a set of commands that are common to all instruments
conforming to IEEE STD. 488.2 protocol. Though defined by the IEEE-488.2
standard, they also apply to MFC-CB RS232 (COM1) communications.
These commands make it easy to perform basic functions for any device that
supports them. These commands also cover the status reporting commands.
Refer to Section 4.4 for details on the status registers mentioned in
these commands. Query forms of these commands must be followed by a question
mark and IEEE-488.2 Common Commands always start with an asterisk (“*”).
Unlike the other MFC-CB commands, they must have a space instead of an equals
sign (“=“) between the command and any arguments. Also unlike the other MFC-CB
commands, if you are using the IEEE-488 port, the query form (command is
immediately followed by a “?”) must be used to get a reply. If using the COM1 port
and the command is not a query, “OK” is replied.
∗
CLS
Purpose
Clear all of the status and event structures.
Syntax
“
∗
CLS”
Remarks
This program message clears the following events and status registers:
Standard Byte Register (STB)
Standard Event Status Register (ESR)
Error Queue
Pending OPC operations
Example Command:
Reply:
“*CLS”
“OK” (using COM1, no reply if IEEE-488 port)
∗
ESE(?)
Purpose
Read or set the standard event status enable register.
Syntax
“
∗
ESE
n
”
“
∗
ESE?”
Parameters
n:
’0 to 255’. This is the decimal representation of the bit(s)
to enable. To enable the PON and QYE bits, the argument
would be 128 + 4 = 132.
Query Reply
n
(0 to 255)
Remarks
The standard event status enable register determines which bits in the
standard event status register are enabled and included in the status byte
register (ESB bit), and can assert the SRQ line. The reply is in decimal
numeric form.
Example Command:
Reply:
“*ESE 132”
“OK” (using COM1, no reply if IEEE-488 port)
Command:
Reply:
“*ESE?”
“132”
