Purchase by using the following button and adding to the PayPal cart (where you can change the quantity). Electrone offers a range of flexible and highly configurable keypads with following features. Features and Benefits. · The VR-18 Paperless Chart Recorder can be connected to a PC with an Ethernet cable allowing students to use the Brainchild's FREE software, allowing for streaming live data or downloading the data to an Excel spreadsheet to further manipulate the information for reports and assignments. Use a 485 to USB serial cable, connect it to the interface of the 485 device and the computer's USB port, assign a COM port on the computer, open serial debugging assistant software, set the serial port parameters consistently, input the corresponding COM port, and monitor the data from the 485 device. 2. USB - The USB can be a VIRTUAL COM PORT, to make communication a breeze, or USB HID so it can be plug and play for many applications. Multiple function keys make navigation a snap and also allow users to quickly scroll backward to review historical trends. The Brainchild's built-in display allows teachers and students to get a clear review of all measured data on its 6.4'' VGA Color LCD displaywith flexible screen configuration.

Teachers can set up the display to a projector, allowing an entire class to view the data representations, and students can print the data collected from any of the display formats. It also has a keypad display attached and the other required hardware interfaces like the RS232, RS422, RS485 etc. This server can customized beforehand to carry out the pre-defined tasks. So when you take the difference of the two, noise is actually canceled out. And even worse, if you have a non opto-isolated device installed on that network, any noise could "drain" to ground through the device itself instead of flowing through the ground terminal at the end of the line, damaging the device in the process! The RS232 - RS422 converter is also often used in older serial devices such as older PLC's and terminal equipment. Due to loading limitations one of the best uses of a RS232 to RS422 serial converter might be in point-to-point communications, such as extending an existing RS232 line. One of the key advantages also is that RS-485 can drive data a long distance. Since RS-485 is a multi-point specification, however, this is not necessary or desirable in many cases.

However, this makes it difficult to search through the information and organize it all. Able to handle multiple inputs, the datalogger provides useful information for experiments involving the heating of various liquids at a variety of volumes. The recorder offers a fast sampling rate within 200msec for all channels and high accuracy with up to 18 universal input channels to connect to a variety of sensors commonly used in lab environments including DC voltage output from specialty sensors and thermocouples/RTDs to log temperatures with extreme precision. After the experiment is completed, the class can view statistics from the recorded data including instant, average, min and max values. A single complex experiment or several individual experiments using multiple sensors can easily be monitored given the Brainchild's capability to record real-time inputs during one session. It receives signals on one network and re-transmits them on another. The shield works as a "drain" for any noise that could be picked up by the RS485 network and "drain" it to ground. So it's better noise immunity. One other key advantage that most people using 485 is, the better noise immunity. The electrical characteristics of RS485 cables include differential signaling, which allows for high noise immunity and long transmission distances of up to 1200 meters.

Use Laurel’s 6-wire data cables CBL03-1 (1 ft) and CBL03-7 (7 ft) to interconnect meters if these lengths fit your application. It can drive things 1200 meters, which RS - 232 is about 15 meters maximum. In a computer system, rs485 cable SCSI-2 and SCSI-3 may use this specification to implement the physical layer for data transmission between a controller and a disk drive. RS485 is a serial data transmission interface standard that enables communication with sensors attached to the same bus (wires). RS485 is a balanced serial interface for the transmission of digital data. All the other Master Bricks with RS485 Extension must not have a USB, Ethernet or WIFI connection (they can use a USB Power Supply). The Modbus protocol further enables RS485 by allowing a master to send and receive data from specific sensors on the bus or to communicate with all the sensors simultaneously. In contrast to RS-422, which has a driver circuit which cannot be switched off, RS-485 drivers use three-state logic allowing individual transmitters to be deactivated.