Ophyd - Revision history

KevinYager: /* Beamlines using ophyd */

2016-11-08T01:43:15Z

‎Beamlines using ophyd

KevinYager: /* EPICS */

2016-11-08T01:30:27Z

‎EPICS

KevinYager: /* EPICS */

2016-11-08T01:30:10Z

‎EPICS

KevinYager at 13:52, 23 September 2016

2016-09-23T13:52:21Z

KevinYager at 17:15, 1 August 2015

2015-08-01T17:15:57Z

KevinYager at 18:17, 31 July 2015

2015-07-31T18:17:02Z

KevinYager at 18:14, 31 July 2015

2015-07-31T18:14:14Z

KevinYager: /* Examples */

2015-07-31T17:51:34Z

‎Examples

KevinYager: Created page with "'''ophyd''' is a Python-based interactive environment for instrument control at NSLS-II synchrotron beamlines. ==Examples== * wh_pos() : motor positions * mov(dcm..."

2015-07-31T17:23:49Z

Created page with "'''ophyd''' is a Python-based interactive environment for instrument control at NSLS-II synchrotron beamlines. ==Examples== * wh_pos() : motor positions * mov(dcm..."

New page

'''ophyd''' is a Python-based interactive environment for instrument control at [[NSLS-II]] [[synchrotron]] [[beamlines]].

==Examples==
* wh_pos() : motor positions
* mov(dcm_x, 1.0) : move motor
* movr(dcm_x, -1.0) : relative motion
* movr([dcm_x, dcm_y], [-1.0,-1.0]) : multiple motions

==Beamlines using ophyd==
* [[NSLS-II]]
** [[CSX]] (Coherent Soft X-rays)
** [[CHX]] (Coherent Hard X-rays)
** [[CMS]] (Complex Materials Scattering)

@@ Line 50: / Line 50: @@
 ** [[CHX]] (Coherent Hard X-rays)
 ** [[CMS]] (Complex Materials Scattering)
 ==See Also==
 * [https://github.com/NSLS-II/ophyd NSLS-II ophyd github]

@@ Line 40: / Line 40: @@
 One can also do:
-** from ophyd import EpicsMotor
+* from ophyd import EpicsMotor
-** motor = EpicsMotor(pv, name='name')
+* motor = EpicsMotor(pv, name='name')
-** motor.user_readback.value
+* motor.user_readback.value
-** motor.user_setpoint.set(0.0)
+* motor.user_setpoint.set(0.0)
 ==Beamlines using ophyd==

@@ Line 23: / Line 23: @@
 One can access [[EPICS]] process variables (PVs) using [http://cars9.uchicago.edu/software/python/pyepics3/ pyEpics]. There are three levels for getting/setting PV values:
 * caget/caput (highest level)
 * PV.get/PV.put (middle level)
 * ca.get/ca.put (lowest level)
-Any of these methods will work; where performance is not an issue (just setting or reading a few times), any of these methods will work. However, if the values are being read or set repeatedly (e.g. inside a loop), then some methods may work better than others. In particular, "caget/caput" should not be used, since these functions create a new connection with every call. (The connection to the PV is the most time-consuming part). Moreover, generating a connection involves broadcasting to look for the host (which affects network performance).
 For better performance, the correct method is to make the connection at the beginning (only once), and then keep reading/setting the PV using that connection. This means using using PV.get/PV.put or ca.get/ca.put.
@@ Line 32: / Line 39: @@
 If you're reading/setting a large number of different PVs (thousands or even more), using the lowest-level (ca.get/ca.put) is the best method.
 ==Beamlines using ophyd==

@@ Line 19: / Line 19: @@
 ** grabit : screengrab, copied immediately to [[Olog]] notebook.
 *** 'i' to enter interactive mode, type text, then to exit+save do 'Esc' then ':wq'.
 ==Beamlines using ophyd==

← Older revision		Revision as of 17:15, 1 August 2015
Line 25:		Line 25:
	** [[CHX]] (Coherent Hard X-rays)		** [[CHX]] (Coherent Hard X-rays)
	** [[CMS]] (Complex Materials Scattering)		** [[CMS]] (Complex Materials Scattering)
		+
		+	==See Also==
		+	* [https://github.com/NSLS-II/ophyd NSLS-II ophyd github]

← Older revision		Revision as of 18:17, 31 July 2015
Line 1:		Line 1:
−	'''ophyd''' is a Python-based interactive environment for instrument control at [[NSLS-II]] [[synchrotron]] [[beamlines]].	+	'''ophyd''' is a [[Python]]-based interactive environment for instrument [[NSLS-II Control Software\|control]] at [[NSLS-II]] [[synchrotron]] [[beamlines]].

	==Examples==		==Examples==

@@ Line 16: / Line 16: @@
 ** Epics signals
 *** eiger1M_exposure_time = EpicsSignal('XF:11IDB-BI{Det:Eig1M}cam1:AcquireTime', rw=True, name='eiger1M_exposure_time')
 ==Beamlines using ophyd==

@@ Line 2: / Line 2: @@
 ==Examples==
-* wh_pos() : motor positions
+* Motors
-* mov(dcm_x, 1.0) : move motor
+** wh_pos() : motor positions
-* movr(dcm_x, -1.0) : relative motion
+** mov(dcm_x, 1.0) : move motor
-* movr([dcm_x, dcm_y], [-1.0,-1.0]) : multiple motions
+** movr(dcm_x, -1.0) : relative motion
+** movr([dcm_x, dcm_y], [-1.0,-1.0]) : multiple motions
+* Scan
+** dscan.detectors : list
 ==Beamlines using ophyd==