Component: Energy Monitor (PZEM-004T) (Electrical)
From Flowcode Help
| Author | Matrix Ltd. |
| Version | 1.0 |
| Category | Electrical |
Contents
Energy Monitor (PZEM-004T) component
The PZEM-004T module is used for measuring AC voltage, current, active power, frequency, power factor & overcurrent. Resetable active energ and the overpower level can be set and monitored.
Component Source Code
Please click here to download the component source project: FC_Comp_Source_Energy_Monitor_PZEM-004T.fcfx
Please click here to view the component source code (Beta): FC_Comp_Source_Energy_Monitor_PZEM-004T.fcfx
Detailed description
No detailed description exists yet for this component
Examples
Note if there is a communication issue then just 9's will be returned!
Example program that uses a PZEM-004T energy monitor to monitor mains voltage, current, frequency, power factor, energy, and over specified power alarm. The alarm threshold is set within properties. Initialiasion returns 0 if PZEM-004T is detected or 255 if it is not. Values are sent to the ESP32 TTGO display which uses a ST7789v1 GLCD.
Macro reference
Initialise
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Initialise |
| Starts up the UART to allow communications. Also, checks if PZEM-004T is detected. Returns 0 if detected or 255 if not detected. | |
 - BYTE
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Return |
ReadAlarmStatus
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ReadAlarmStatus |
| 65535 = Overpower alarm triggered. 0 = Overpower alarm not triggered. | |
 - UINT
|
Return |
ReadCurrent
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ReadCurrent |
| Read what the current draw is. Resolution: 0.001A Measurement accuracy: 0.5% | |
 - FLOAT
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Return |
ReadEnergy
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ReadEnergy |
| Read active energy value. Resolution: 1Wh Measurement accuracy: 0.5% | |
| - FLOAT
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Return |
ReadFrequency
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ReadFrequency |
| Reads the frequency of the mains | |
| - FLOAT
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Return |
ReadPower
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ReadPower |
| Read active power. Starting measure power: 0.4W Resolution: 0.1W | |
| - FLOAT
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Return |
ReadPowerAlarmThreshold
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ReadPowerAlarmThreshold |
| Reads the power alarm threshold in watts | |
| - UINT
|
Return |
ReadPowerFactor
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ReadPowerFactor |
| Read power factor Resolution: 0.01 Measurement accuracy: 1% | |
| - FLOAT
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Return |
ReadVoltage
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ReadVoltage |
| Read voltage. Measuring range:80～260V Resolution: 0.1V Measurement accuracy: 0.5% | |
| - FLOAT
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Return |
ResetEnergy
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ResetEnergy |
| Reset the energy value | |
| - BYTE
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Return |
SetPowerThresholdLevel
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SetPowerThresholdLevel |
| Sets the power alarm threshold in watts | |
| - UINT
|
PowerThresholdValue |
| Reg addreess high of alarm threshold | |
| - BYTE
|
Return |
Property reference
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Properties |
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UART Properties |
|
Channel |
| UART Channel selector Software channels are bit banged using generic I/O pins but are not as reliable as hardware channels. Hardware channels use the selected peripheral on-board the target microcontroller. | |
|
TX |
| Pin to be used for Transmit data | |
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RX |
| Pin to be used for Receive data | |
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Baud Options |
| Baud rate option selector | |
|
Baud Rate |
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Bus |
| Specifies the bus mode being used, RS232 allows you to connect a single master node to a single slave node. RS485 allows you to connect a single master node to multiple slave nodes. | |
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Modbus Properties |
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Receive Buffer Size |
| Maximum number of bytes the receive buffer can hold | |
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Slave ID Bytes |
| Number of bytes used when passing a slave ID, usually 1 but sometimes 2 | |
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Silent Interval |
| Configures how much time to wait after each master modbus command before another command can be sent. A silent interval of 60ms minimum is required in order to guarentee successful reception of the next transmission. 0=No Delay 60 = 60mS - Default Range : 0 - 65535 | |
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UART Receive Timeout |
| Amount of time to wait before timing out when listening for a slave's response. Range: 0 - 255. 0 = Don't Wait 1 - 254 = X ms 255 = Wait Forever | |
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Receive Timeout Count |
| Number of timeouts in a row to wait for until we decide the slave is not responding or finished responding to a message. Range: 0 - 255 0 = First Timeout Only 1 = First Timeout + 1 2 = First Timeout + 2 | |
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Simulation Properties |
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Label |
| A text label to appear on the Modbus panel object. | |
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Scope Traces |
| Selects if the scope traces are automatically added to the data recorder window or not. Simulation - draws an approximation of the UART data onto the scope trace. ICT - sets up the scope trace for incoming data and adds UART packet decoding at the correct BAUD. | |
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Console Data |
| Selects if the console data is automatically generated or not | |
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Console Columns |
| Number of characters that can be displayed on a single line of the console. | |
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Data Source |
| Simulation data source used to allow the component to connect to various remote devices Nothing - Simulation data is ignored COM port - Routes the communication data to and from a physical or virtual COM port API - Routes the communication data via a data API component on the Panel. | |
