Wavelength Electronics LFI-3751, User Manual

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101
Chapter 4 - Remote Interface Reference
Enabling and Disabling the Output Current
Enabling and Disabling the Output Current
1. Enable Current
•
To enable the instrument’s output current send the following Command
Packet .
Write
!000.00123
(Enable Output Current)
2. Disable Current
•
To disable the instrument’s output current send the following Command
Packet .
Write
!000.00022
(Disable Output Current)
3. Monitor Output Status
•
To read the output status, the Command Type changes from a WRITE
(2) to a READ (1):
Read
!000.00021
•
The following table details the structure of the characters returned
in the data fi eld.
For complete detail about Enabling the Output Current, see Chapter 2.
Char 7 = Sign Char []
Char 6 = Not Used
Char 5 = Autotune Error Code
1 = Zero Value Current Limit Error
2 = Current Limit Cannot reach SET T
3 = Non-uniform TE I step measured
4 = Rate Sign Change
Char 4 = Autotune Status [0 = Normal Operation, 1 = Autotune Operation]
Char 3 = Decimal Point
Char 2 = Temp Limit or Sensor Error Status [1 = requires clearing]
Char 1 = Integrator Status [0 = OFF, 1 = ON]
Char 0 = Output Status [0 = OFF, 1 = ON]
RS-232
Commands Discussed:
[RUN / STOP]
If Character 2 is ‘1’, a Temp Limit or Sensor Error has occurred. The next
command to enable current will clear the error without enabling current.