Bristol 671 - SCPI Communications Scheme

Model 671 User’s Manual REMOTE COMMUNICATIONS
Bristol Instruments, Inc. 33
SCPI Communications Scheme
This section describes the communication scheme of the 671 Laser Wavelength Meter. It
follows the Standard Commands for Programmable Instruments (SCPI) Syntax and Style
Guidelines. The following table provides a summary of commands by subsystem. “[…]”
brackets indicate an optional argument, and “{… | … | …}” brackets indicate a choice
from a set of arguments.
Common Commands
*CLS
Description
The *CLS (clear status) command clears all event registers and the
error queue.
*ESE?
Description
Queries the bits in the standard event status enable register.
Query Response
Returns an integer which is the sum of all the bit values for those bits
that are set. See the Event Status Register Enable table below.
*ESE <integer > mask from 0 to 255
Description
The *ESE (event status enable) command sets the bits in the event
status enable register and enables the corresponding events in the
event status register. For each bit that is set (equal to 1), the
corresponding bit is enabled in the event status register (ESR).
<integer> is an integer value which is the sum of all of the bit values
for those bits that are set.
Event Status Enable Register
BIT
BIT VALUE
ENABLES
7
128
Power On (PON)
6
64
Not Used
5
32
Command Error (CME)
4
16
Execution Error (EXE)
3
8
Device Dependent Error (DDE)
2
4
Query Error (QYE)
1
2
Not Used
0
1
Operation Complete (OPC)