:SYSTem:ERRor:COUNT?

Query Syntax

:SYSTem:ERRor:COUNT?

Description

Returns the string which is the number of errors contained in the error-message buffer. To return the "first in" error, use the :SYSTem:ERRor:NEXT? query.

Example Python 3.x Script

This script opens a session with FlexPLL running on the PC and sends two invalid commands that create two error messages. FlexPLL's error buffer is then queried for the errors.

import visa # import VISA library

rm = visa.ResourceManager()
FlexPLL = rm.open_resource('TCPIP0::localhost::hislip0,4880::INSTR') #HiSLIP

FlexPLL.timeout = 20000 # Set connection timeout to 20s
FlexPLL.read_termination = '\n'
FlexPLL.write(':HAPPY:BIRTHDAY TODAY') # Illegal command for error!
FlexPLL.write(':TIMebase:POSition 2.4E10') # out of range for error!
error_cnt = int(FlexPLL.query(':SYSTEM:ERRor:COUNt?'))
if error_cnt == 0:
    print('\n\tNo FlexPLL errors reported.')
else:
    for i in range(0,error_cnt):
        print('\tERROR: ' + FlexPLL.query(':SYSTem:ERRor:NEXT?'))
FlexPLL.write(':SYSTem:GTLocal')
FlexPLL.close()