TD-500: Difference between revisions
→Basic terms and concepts
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'''''CNT''' -'' an oscillatory circuit, thanks to which the basic level of filling of the sensor measuring tubes with fuel is calculated. This level is converted to a final value determined by the data interface. | '''''CNT''' -'' an oscillatory circuit, thanks to which the basic level of filling of the sensor measuring tubes with fuel is calculated. This level is converted to a final value determined by the data interface. | ||
'''''Data transfer protocol''''' - a set of specific logical-level rules or conventions that govern the exchange of data between different programs or devices. For TD-150, the main transmission protocol is '''LLS via the RS-485 interface'''. The TD-500 sensor also supports '''MODBUS''' protocol, [[MODBUS ТД-500| | '''''Data transfer protocol''''' - a set of specific logical-level rules or conventions that govern the exchange of data between different programs or devices. For TD-150, the main transmission protocol is '''LLS via the RS-485 interface'''. The TD-500 sensor also supports '''MODBUS''' protocol, [[MODBUS ТД-500|description]]. | ||
'''''Data transfer mode''''' - this is a type of boundary between two objects or nodes, which are regulated by a special accepted standard and implemented using established methods, tools and rules. TD-500 has the following operating modes: | '''''Data transfer mode''''' - this is a type of boundary between two objects or nodes, which are regulated by a special accepted standard and implemented using established methods, tools and rules. TD-500 has the following operating modes: | ||
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[[File:TD-500 modes.png|frameless|697x697px]] | [[File:TD-500 modes.png|frameless|697x697px]] | ||
*'''Passive RS485''' should be selected when you plan to connect to line A and B of the terminal's RS-485 interface. The terminal must have the function of polling sensors, for example, requesting information from them. The terminal must be able to interrogate sensors in accordance with the '''LLS protocol''' or '''MODBUS protocol ([[MODBUS ТД-500| | *'''Passive RS485''' should be selected when you plan to connect to line A and B of the terminal's RS-485 interface. The terminal must have the function of polling sensors, for example, requesting information from them. The terminal must be able to interrogate sensors in accordance with the '''LLS protocol''' or '''MODBUS protocol ([[MODBUS ТД-500|description]])''' | ||
* '''Frequency mode''' is used when connecting to a GPS terminal to inputs that can receive and read signals in the range '''300 Hz … 1323 Hz''' or '''300 Hz … 4395 Hz'''. | * '''Frequency mode''' is used when connecting to a GPS terminal to inputs that can receive and read signals in the range '''300 Hz … 1323 Hz''' or '''300 Hz … 4395 Hz'''. | ||
* '''Active RS485''' mode should be used if the terminal has an RS-485 connection interface, but cannot independently poll the sensor, for example, request information from it; the sensor will send its readings independently every 2 seconds. | * '''Active RS485''' mode should be used if the terminal has an RS-485 connection interface, but cannot independently poll the sensor, for example, request information from it; the sensor will send its readings independently every 2 seconds. | ||
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[[File:TD-150 BLE set parameters.png|frameless]] | [[File:TD-150 BLE set parameters.png|frameless]] | ||
* '''Passive RS485''' should be selected when you plan to connect to line A and B of the terminal's RS-485 interface. The terminal must have the function of polling sensors, for example, requesting information from them. The terminal must be able to interrogate sensors in accordance with the '''LLS protocol and MODBUS protocol'''. '''([[MODBUS ТД-500| | * '''Passive RS485''' should be selected when you plan to connect to line A and B of the terminal's RS-485 interface. The terminal must have the function of polling sensors, for example, requesting information from them. The terminal must be able to interrogate sensors in accordance with the '''LLS protocol and MODBUS protocol'''. '''([[MODBUS ТД-500|description]])''' | ||
* '''Frequency mode''' is used when connecting to a GPS terminal to inputs that can receive and read signals in the range '''300 Hz … 1323 Hz''' or '''300 Hz … 4395 Hz''' | * '''Frequency mode''' is used when connecting to a GPS terminal to inputs that can receive and read signals in the range '''300 Hz … 1323 Hz''' or '''300 Hz … 4395 Hz''' | ||
* '''Active RS485 mode''' should be used if the terminal has an RS-485 connection interface, but cannot independently interrogate the sensor, for example, request information from it; the sensor will send its readings independently every 2 seconds. | * '''Active RS485 mode''' should be used if the terminal has an RS-485 connection interface, but cannot independently interrogate the sensor, for example, request information from it; the sensor will send its readings independently every 2 seconds. | ||