THORLABS ELL14, Руководство по эксплуатации

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ELL14 Motorized SM1 Optic Rotator Chapter 4: Operation
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4.2.3 Communications Protocol
Custom move applications can be written in languages such as C# and C++.
The communication bus allows multi-drop communication with speeds at 9600 baud, 8 bit data length, 1 stop bit, no parity.
Protocol data is sent in ASCII HEX format, while module addresses and commands are mnemonic character (no package length
is sent). Modules are addressable (default address is “0”) and addresses can be changed and/or saved using a set of commands.
Lower case commands are sent by user while upper case commands are replies by the module.
Please refer to the communications protocol manual for more detail about commands and data packet formats.
4.2.4 Connecting Multiple Devices
When a device is first connected to the PC, it is assigned the default address '0'. The software can run multiple devices; however,
before more than one device can be recognized, each device must be assigned a unique address. See below for a brief overview;
detailed instructions are contained in the help file supplied with the software.
Connect the first device to the PC USB port, then run the Elliptec software and load the device.
Change the address of the first device.
Connect the next device to the first device.
Change the address of the second device.
Multiple devices can be controlled individually, either via the Elliptec software or by a third party application written using the
messages detailed in the protocol document. Control via the handset is applied to all devices simultaneously.
4.2.5 Controlling the Rotator Without the Handset
Caution
During normal operation each motor is protected with a time out of 2.5 seconds to prevent overheating. Do not override
this protection or drive the motors continuously.
In the absence of the handset, the rotator is controlled via digital lines: forward, backward and mode (J1 pins 7, 6 and 5) by
shorting the corresponding line to ground (pin 1).
When the rotator is moving, the open drain IN MOTION digital line (pin 4) is driven low (active low) to confirm movement. The
IN MOTION line goes high (inactive) when the move is completed or the maximum time-out (2.5 seconds) is reached.
Warnings
Do not exceed the voltage and current ratings stated in Figure 6.
Do not reverse polarity.