LI6400Term / LI6400Term HD

 

The iPhone/iPad Touch application LI6400Term (and LI6400Term HD for iPad) allow complete monitoring and control of the LI-COR LI-6400XT Portable Photosynthesis System. The are two methods of connection supported: Local and Remote.

 

Screen1.png

 

Local Connection

Since and LI-6400XT has no WiFi capability itself, this connection is typically make by using Ethernet to attach the instrument to a wireless router, or connecting to a network that has WiFi capability. Then, join the iPhone to that network. When the LI6400Term application is launched, it will use Bonjour to locate all XTs that are attached to that network. If you think some are missing from the list, touch the Rescan button.

 

To connect to a listed unit, simply touch that entry in the table. Once the connection is made, you will see the instrumentÕs display, as illustrated in figures below, under Controlling an XT.

 

If for some reason Bonjour does not find a particular LI6400XT, you can touch the Add button, and enter the IP address that is displayed on the LI6400XT display in the Network Status screen (Utility menu / Communications / Network Status).

 

Remote Connection

LI6400Term can use the internet via WiFi or WWAN (3G) to attach to an LI-6400XT via the li6400.licor.com server. This requires just a bit of cooperation between the parties, in that two identifiers need to be agreed upon: a local and a remote ID. An example is shown below. The LI-6400XT is in Utility Menu / Communications / Connect to LI6400.licor.com, and the iPhone is in the authentication display which pops up when you touch li6400.licor.com in the main list.

 

Connect6400.jpg

 

At this point, one would press C on the LI-6400 to connect, and Connect on the iPhone.

 

A note on timing: With LI-6400XT running OPEN 6.1.3 or less, you should connect the iPhone first. Otherwise, the server will disconnect the XT after 10 seconds, and youÕd have to manually reconnect.

 

For OPEN 6.1.4 or higher it doesnÕt matter who connects first.

 

One more issue: with OPEN 6.1.4 and below, you cannot connect multiple times to an unattended instrument, since someone has to be at the console to get it to connect the second time. With OPEN 6.2, once the instrument it told to connect, it will keep that connection to the server, allowing multiple sequential connections to an unattended instrument.

 

Controlling an XT

Once a connection is made, whether remote or local, the iPhone display will show two views: the upper view is a simulated LCD that mirrors what is on the LI-6400XT console display, and the lower view is a keypad.

 

 

Text Box: The simulated LCD mirrors the LI-6400XT display. Screen2.png

 

 

The operation from here is straightforward: ÒdriveÓ the LI-6400XT using the keypad, and watch the results on the display.

 

On the KeyPad, the SHIFT and CTRL keys are ÒstickyÓ. That is, press and release to change their state. The ?@]  toggles keypad from letters to symbols. See KeyPad Reference below for all combinations of states.

 

Hints:

 

The LABELS key is in the upper left (where ESC normally is) when SHIFT is on. 

 

The DEL key is in the upper right (where ENTER normally is) when SHIFT is on.

 

To disconnect from the LI-6400, touch the LI-6400XTs key in the Navigation Bar.

 

A keystroke is sent to the LI-6400XT upon touch up – that is, when you release the key. iPhone only: Until then, a pop-up indicator will show what key is currently being pressed. (If itÕs not the one you want, you can slide your finder around until you get it right, then let up – thatÕs when the key is sent).

 

Key5Pressed.png

 

Text Box: Note that the fct key labels in the LCD view also work like keys, F1 thru F5. This is true whether there are labels displayed or not.F4Pressed.png

 

 

KeyPad Fct Keys

 

Text Box: Note that the keypad area is actually a scrollable region that contains the currently defined function key labels. These labels function as active keys that you can press. Note 1: When you first connect with an instrument with OPEN software 6.1.4 and lower, no fct keys are shown in the keypad area until the next time their definitions are sent from the instrument. This happens anytime something causes the labels to change. Note 2: When connecting remotely (via li6400.licor.com) to any instrument running OPEN 6.1.4 or lower, no fct keys will EVER be shown. OPEN 6.2 and above corrects both of these issues. SwipteToSeeFctKeys.jpg

 

KeypadLeftRight.jpg

 

KeyPad Reference

Text Box: Normal keys With Shift. Note LAB (for labels) and DEL in upper corners. With CTRL. YouÕd use CTRL + Z to turn off warning messages in New Measurements mode, for example. Note that HALT will cause the LI-6400XT to stop whatever program is currently running.

KeyPad_Letters.png

 

KeyPad_Letters_Shift.png

 

KeyPad_Letters_Ctrl.png

 

Text Box: With CTRL and SHIFT. Note that the cursor control keys on the top row show their LI-6400 Hot Key meanings. For Example, CTRL + SHIFT + Up Arrow changes the contrast of the instrument display. The Numbers and Symbols keyboard, accessed via the ?@] / ABC key in the lower left. With the SHIFT key. KeyPad_Letters_Shift_Ctrl.png

 

KeyPad_Symbols.png

 

KeyPad_Symbols_Shift.png

 

Text Box: With the CTRL key. With CTRL and SHIFT. KeyPad_Symbols_Ctrl.png

 

 

KeyPad_Symbols_Shift_Ctrl.png

 

 

For support, contact LI-COR Biosciences.