This is historical information of device classes implemented in TwickenhamSMC device server.
Use this link to find the valid information.
Development status:
New development
Information status: Updated
Contact:
Class Description
This class is used for controlling the main features of Twickenham Superconducting Magnet Controller
Families: Instrumentation
Key words:
Platform: All Platforms
Language: Python
License: GPL
Contact:
Hardware
Manufacturer: Twickenham
Product:
Superconducting Magnet Controller 120-10/20 firmware 5.64 - 5.68
Bus: Serial Line
Class interface
Attributes:
| Name | Description |
|---|---|
| CalibrationScalar: DevDouble | Calibration factor used to compute field from current |
| CurrentScalar: DevDouble | Output current being delivered |
| FieldScalar: DevDouble | Output field being delivered |
| VoltageScalar: DevDouble | Output voltage being delivered |
| DirectionScalar: DevBoolean | Ramp direction (positive=False/negative=True) |
| FPLockedScalar: DevBoolean | Front panel locked |
| PausedScalar: DevBoolean | Ramp paused |
| RampRateScalar: DevDouble | Ramp rate |
| RampTargetScalar: DevString | Ramp target (lower, zero or upper) |
| TargetToleranceScalar: DevDouble | Tolerance to consider target reached |
| TargetTolerance0Scalar: DevDouble | Tolerance to consider zero reached |
| UnitsScalar: DevString | Units displayed in front panel (Amps or Tesla) |
| UpperScalar: DevDouble | Upper target setpoint |
| LowerScalar: DevDouble | Lower target setpoint |
| CommErrorsSpectrum: DevString | Log of communication errors since last init |
Commands:
| Name | Description |
|---|---|
| StateInput: DevVoid Output: State State Code |
This command gets the device state (stored in its <i>device_state</i> data member) and returns it to the caller. |
| StatusInput: DevVoid Output: ConstDevString Status description |
This command gets the device status (stored in its <i>device_status</i> data member) and returns it to the caller. |
| RampInput: DevUShort 0 : ramp to Zero 1 : ramp to Lower 2 : ramp to Upper Output: DevVoid |
Ramp power supply to Lower, Upper or Zero |
| RampInRangeInput: DevVarDoubleArray start and end points of the ramp range Output: DevVoid |
Ramp power supply between the 2 setpoints passed as parameters |
| StopInput: DevVoid Output: DevVoid |
Stop power supply at current value by setting current field/amps as lower/upper setpoing, depending on current set target |
| ZeroInput: DevVoid Output: DevVoid |
Set zero as target |
Pipes:
Properties:
| Name | Description |
|---|---|
| SerialDeviceDevString | The serial device to connect to. Three types are supported: Configuration: 9600 8N2, SOFTWARE FLOW CONTROL ENABLED (XON/XOFF)!, newline 0xA, 1) Simu. Simulated mode for development purposes 2) The name of the serial tango device to connect to. Serial and PySerial devices are supported 3) The name of the serial device to connect to (i.e. /dev/ttyS0). In this case the connection is direct and this server must be run on the machine where the serial port resides |
| AutoRampDownDevBoolean | Device should check that auto ramp down is correctly configured in the hardware |
| AutoInvertDevBoolean | Allow or not automatic polarity inversion if requested ramping requires inverting it |
| CalibrationDevDouble | Calibration factor Tesla/Amp |
| MaxCurrentDevDouble | Maximum current in Amps |
| MaxRampRateDevDouble | Maximum ramp rate in Amps/sec |
| MaxVoltageDevDouble | Maximum voltage in Volts |
| UnitsDevString | If defined then the especified value will be set in the hardware on initialization |
README
b'There are 2 servers defined in this repository:\n\n1) TwickenhamSMC: this is a server for controlling a Twickenham Superconducting\nMagnet Controller. This should be fully reusable.\n\nNOTES\n\na) Note that AutoRampDown specific ramp rate introduced in firmware 5.68 is only\nchecked at init if AutoRampDown property is set to True. If your SMC firmware is\nlower than 5.68, then the device will fail on init if AutoRampDown is True.\n\nb) Note that version 5.68 allows the locking of the upper setpoint. You have to\nmanipulate the hardware to do this (explained in section "Setting of special\nfunctions" in 5.68 manual). If you do so, please note that writting the Upper\nattribute to a value different than the default one will always fail.\n\nc) It looks like the hardware may contain a communications error. Please have a\nlook at "test" directory for more details.\n\nd) To clarify:\n- Which are the ramp rate presets?\n- Why cmd_current_status K returns "R0M2P0X3H0Z0.00E00Q 000.000" (note white\n space) instead of "R0M2P0X3H0Z0.00E00Q-000.000" when direction is inverted?.\n This made fail the regular expression.\n- Why writing upper or lower returns different value (i.e 4.5 is read back as 4.5001)\n\n2) VectorMagnetXMCD: this is a specific server for managing the 3 SMC of the Alba\nBL29 XMCD end. It takes care of all the necessary restrictions and specific\nfeatures of XMCD. Note that these are specific to this beamline, so this device\nprobably is not reusable.\n'
Updated:
A device class has been added.
You are looking at this version now.
23 Feb 2017, Piotr Goryl
Updated:
The device class has been updated.
You can see previous version here .
19 Jan 2017, Piotr Goryl
Updated:
The device server has been updated.
You can see previous version here .
19 Jan 2017, Piotr Goryl
Updated:
The device server has been updated.
You can see previous version here .
2 Jan 2017, Piotr Goryl
Updated:
The device server has been updated.
You can see previous version here .
2 Jan 2017, Piotr Goryl
Created:
The device server has been added to catalogue.