4. REMOTE OPERATION
Page 101
© 1998-2007 DH Instruments, a Fluke Company
4.3.4
COMMAND DESCRIPTIONS
Each command description gives the full syntax showing usage. Ranges of parameters or
parameter types are indicated. There are 2 types of commands. The Common and Status
Commands support IEEE Std. 488.2, while the molbloc RFM commands access all
other functions.
4.3.4.1
IEEE STD. 488.2 COMMON AND STATUS COMMANDS
The molbox RFM 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 molbox RFM RS232 (COM1) communications. These
commands make it easy to perform basic functions for any device that supports
them. These command 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
molbox RFM commands, they must have a space instead of an equals sign (“=“)
between the command and any arguments. Also unlike the other molbox RFM
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” will be replied.
∗
CLS
Purpose
Clear all of the status and event structures.
Syntax
“
∗
CLS”
Remarks
This program message clears the following evens 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”
