User Tools

Site Tools



This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
fw1000_and_mm [2018/08/15 18:08]
fw1000_and_mm [2019/04/18 23:34] (current)
Line 1: Line 1:
 +====== Micro-Manager and Filterwheel ======
 +This Technical note is to document the known issue when connecting micro-manager(MM) with ASI's filter wheel and work around for it. 
 +On Startup MicroManager does the following:
 +  * First MM does is to issue serial command <wrap cmd> VB 6 </​wrap>​ to set the controller in verbose mode 6, where <wrap reply> 0> </​wrap>​ or <wrap reply> 1> </​wrap>​ prompt isn't given.
 +  * Next it selects the filterwheel being added <wrap cmd> FW0 </​wrap>​ or <wrap cmd> FW1 </​wrap>​
 +  * Then queries the firmware version with <wrap cmd> VN </​wrap>​ command.
 +  * Next sets spin mode to 0 with <wrap cmd> SF0 </​wrap>​ command
 +  * Then queries the controller for number of filter positions with <wrap cmd> NF </​wrap>​ command
 +  * Next queries the spin mode again with <wrap cmd> SF </​wrap>​ to make sure spin mode is idle.
 +  * Then queries the status of the controller with busy command <wrap cmd> ? </​wrap>​. If the controller replies with <wrap reply> 0 </​wrap>​ indicating controller isn't busy, then MM issues <wrap cmd> MP 0 </​wrap>​ command to move wheel to position 0.
 +  * Often the reply to <wrap cmd> ? </​wrap>​ isn't as clean as a <wrap reply> 0 </​wrap>​. Then MM issues <wrap cmd> SF0 </​wrap>​ again , followed by Home <wrap cmd> HO </​wrap>​ command. Then it polls busy <wrap cmd> ? </​wrap>​ command every 20 millisec until it gets a <wrap reply> 0 </​wrap>​ as reply. Does it atleast a 100 times. If it never gets <wrap reply> 0 </​wrap>​ as a reply, then it gives up gives "​Filter wheel doesn'​t appear to be connected"​ error# 10030. ​
 +  * Some times Home <wrap cmd> HO </​wrap>​ command causes another error. <wrap cmd> HO </​wrap>​ command replies with an echo <wrap reply> HO </​wrap>​. Because of legacy this command isn't terminated and a time out is used by MM to wait for the reply to come. If the reply is delayed and the timer runs out and doesn'​t get the reply for <wrap cmd> HO </​wrap>​ , MM gives a "​Unrecognized serial answer from ASI device"​ error# 10009 instead. ​
 +  * __The fix__, on startup of controller, before connecting to MM , press the NEXT button a couple of times, this clear up any <wrap reply> 11 </​wrap>​ errors. So when MM queries with busy <wrap cmd> ? </​wrap>​ command, it gets the <wrap reply> 0 </​wrap>​ reply right away and it avoids the whole <wrap cmd> HO </​wrap>​ command issue. ​
 +{{tag>​fw1000 tech_note}}
Address: 29391 W Enid Rd. Eugene, OR 97402, USA | Phone: +1 (541) 461-8181
fw1000_and_mm.txt ยท Last modified: 2019/04/18 23:34 (external edit)