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| resources:eval:user-guides:circuits-from-the-lab:cn0179 [05 May 2015 19:49] – formatting Brandon Bushey | resources:eval:user-guides:circuits-from-the-lab:cn0179 [30 Jul 2021 07:13] (current) – Victor Calinao, Jr | ||
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| ===== OVERVIEW ===== | ===== OVERVIEW ===== | ||
| - | The circuit is a 4 mA-to-20 mA current loop transmitter for communication between a process control system and its actuator. Besides being cost effective, this circuit offers the industry’s low power solution. The 4 mA-to-20 mA current loop has been used extensively in programmable logic controllers (PLCs) and distributed control systems (DCS’s), with digital or analog inputs and outputs. Current loop interfaces are usually preferred because they offer the most cost effective approach to long distance noise immune data transmission. The combination of low power [[http:// | + | The circuit is a 4 mA-to-20 mA current loop transmitter for communication between a process control system and its actuator. Besides being cost effective, this circuit offers the industry’s low power solution. The 4 mA-to-20 mA current loop has been used extensively in programmable logic controllers (PLCs) and distributed control systems (DCS’s), with digital or analog inputs and outputs. Current loop interfaces are usually preferred because they offer the most cost effective approach to long distance noise immune data transmission. The combination of low power [[adi>AD8657|AD8657]] |
| ---- | ---- | ||
| ===== GENERAL SETUP ===== | ===== GENERAL SETUP ===== | ||
| - | * [[http:// | + | * [[adi>EVAL-CN0179-PMDZ|EVAL-CN0179-PMDZ]] Evaluation Board |
| - | * [[http:// | + | * [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] Evaluation Board |
| - | * [[http:// | + | * [[adi>SDP-PMD-IB1Z|SDP-PMD-IB1Z]] Evaluation Board |
| * [[ftp:// | * [[ftp:// | ||
| * (supplied with provided CD in kit) | * (supplied with provided CD in kit) | ||
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| {{: | {{: | ||
| - | - Connect the 120-pin connector of the [[http:// | + | - Connect the 120-pin connector of the [[adi>SDP-PMD-IB1Z|SDP-PMD-IB1Z]] circuit board to the connector marked “CON A” on the [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] evaluation (SDP) board. |
| - | - Place shunt to header JP1 to give +3.3V voltage out as seen in the label found in [[http:// | + | - Place shunt to header JP1 to give +3.3V voltage out as seen in the label found in [[adi>SDP-PMD-IB1Z|SDP-PMD-IB1Z]]. |
| - | - Connect the 12-pin right angle male pin header of [[http:// | + | - Connect the 12-pin right angle male pin header of [[adi>EVAL-CN0179-PMDZ|EVAL-CN0179-PMDZ]] to the 12-pin right angle female pin header of [[adi>SDP-PMD-IB1Z|SDP-PMD-IB1Z]]. |
| - | - Connect the current meter in series with the Iout terminal block of the [[http:// | + | - Connect the current meter in series with the Iout terminal block of the [[adi>EVAL-CN0179-PMDZ|EVAL-CN0179-PMDZ]] |
| - Connect DC Power Supply (+18V/GND) to the Power connector P1. | - Connect DC Power Supply (+18V/GND) to the Power connector P1. | ||
| - | - Plug the mini end of the USB cable into connector J1 of the [[http:// | + | - Plug the mini end of the USB cable into connector J1 of the [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] and connect the other end of the USB cable into the Laptop or PC. |
| - | - Plug in the wall wart and connect it to connector J1 of the [[http:// | + | - Plug in the wall wart and connect it to connector J1 of the [[adi>SDP-PMD-IB1Z|SDP-PMD-IB1Z]]. |
| - Place shunt to Header J1 to measure the voltage across the load on the Iout terminal block. No shunt means current measurement. | - Place shunt to Header J1 to measure the voltage across the load on the Iout terminal block. No shunt means current measurement. | ||
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| - **Enter Hex Code** – This control allows to Enter a value from 0x000 to 0x3FF. | - **Enter Hex Code** – This control allows to Enter a value from 0x000 to 0x3FF. | ||
| - **Iout** – This indicator shows the calculated Output Current depending on the input Code. | - **Iout** – This indicator shows the calculated Output Current depending on the input Code. | ||
| - | - **Data Bits** – Binary equivalent of the Code loaded to the [[http:// | + | - **Data Bits** – Binary equivalent of the Code loaded to the [[adi>AD5641|AD5641]] DAC. |
| - **VDAC** – This indicator shows the calculated DAC output Voltage depending on the input code. | - **VDAC** – This indicator shows the calculated DAC output Voltage depending on the input code. | ||
| - **Enter Output Current** – This control allows to Enter a value from 0 to 20. | - **Enter Output Current** – This control allows to Enter a value from 0 to 20. | ||
| - | - **Data Code** – This indicator shows the Hex Code equivalent of the value loaded to the [[http:// | + | - **Data Code** – This indicator shows the Hex Code equivalent of the value loaded to the [[adi>AD5641|AD5641]] DAC. |
| - | - **Write DAC** – When this button is pressed, the values/ | + | - **Write DAC** – When this button is pressed, the values/ |
| - **System Status String Indicator** - This indicator displays a message to the user detailing the current state of the software. | - **System Status String Indicator** - This indicator displays a message to the user detailing the current state of the software. | ||
| - **System Status LED Indicator** - This indicator displays the current state of the software in the form of an LED.\\ | - **System Status LED Indicator** - This indicator displays the current state of the software in the form of an LED.\\ | ||
| - **SDP Board Information** - provides details on the firmware version of the Blackfin used by the SDP board. | - **SDP Board Information** - provides details on the firmware version of the Blackfin used by the SDP board. | ||
| + | =====Registration===== | ||
| + | <WRAP round tip 80% > | ||
| + | Receive software update notifications, | ||
| + | // End of document // | ||
resources/eval/user-guides/circuits-from-the-lab/cn0179.txt · Last modified: 30 Jul 2021 07:13 by Victor Calinao, Jr