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HWg-PWR:  M-Bus IP energy meter (SNMP, WEB) 

HW group 

 

 

 

 

www.HW-group.com 

 

page 25 

 
 

Edit  y.Value on x.Meter section 

   

 

 

Name 

– Value name. Identifies the value (variable). 

 

Unit

 – Physical unit of measurement. Identifies the unit of the value being 

measured. Together with its exponent, it can be used to convert the value to a 
custom format and unit (W/kW, kWh/MWh, dm

3

/l  and so on). 

 

Exponent

 – Allows you to change the order of the displayed unit of measurement. 

 

Tarif

 – Identifies the tariff in multi-tariff meters. 

 

Zero Offset

 – Bias. Allows a modification of the displayed value by adding 

(subtracting) a fixed number. Typically used to monitor differences for a given 
time period. 

 

Logging Enabled

 – Enables the recording of readouts into the internal memory. 

Recording interval is specified at the Log tab.  When logging is enabled for fewer 
variables, more records can be stored.  

 

Value Alarming

 – Enables alarming for the current value. This is useful for making 

sure that a value (line current, flow rate etc.) stays within its allowed range. This 
function can inform you about overconsumption or suspiciously low consumption 
and help avoid further problems. 

 

SafeRange Hi

 – High limit. Alarm occurs if the measured value exceeds the value 

specified here. 

 

SafeRange Lo

 – Low limit. Alarm occurs if the measured value falls below the 

value specified here. 

 

Saferange Hyst

 – Allowed hysteresis. Suppresses false alarms if the measured 

value oscillates near the threshold. The hysteresis only applies in the direction 

Summary of Contents for HWg-PWR

Page 1: ...HWg PWR MANUAL...

Page 2: ...sconnection point must be freely accessible The device must not be used under any of the following conditions The device is noticeably damaged The device does not function properly Unfastened parts ca...

Page 3: ...faults 6 Connecting meters to HWg PWR 7 Technical specifications 8 First steps 9 1 Connecting the cables 9 2 Configuring the IP address UDP Config 9 3 WWW interface of the device 10 Adding connected m...

Page 4: ...e consumption or liquid flow rate and so on Note HWg PWR is designed to be universal hence all discovered values are read out from every connected meter until a specified limit is reached To improve u...

Page 5: ...ion to plot graphs Configuration of allowed ranges for measured values Independent counters for periodic consumption readouts daily weekly monthly annually Configuration of the unit of measurement and...

Page 6: ...mmunication takes place Status green HWg PWR status o Solid on HWg PWR is in regular operation o Slowly flashing HWg PWR is starting up o Rapid flashing firmware is being uploaded Link amber flashing...

Page 7: ...HWg PWR M Bus IP energy meter SNMP WEB HW group www HW group com page 7 Connecting meters to HWg PWR...

Page 8: ...95 LED indicators POWER green lights up when the device is powered LINK red flashes whenever communication takes place over the Ethernet interface Status red HWg PWR status Solid on HWg PWR is in regu...

Page 9: ...on After power up the amber LINK LED flashes rapidly to indicate IP address negotiation over DHCP The green M Bus LED indicates communication over the M Bus 2 Configuring the IP address UDP Config UDP...

Page 10: ...P Config Disconnect the power jack connect the jumper near the RJ11 sockets power up the device and wait for 15 seconds Then disconnect the power and disconnect the jumper The device is ready in its f...

Page 11: ...alues Start the WWW interface of HWg PWR and go to the Device menu The list of detected meters is empty Individual meters are always added to HWg PWR manually A tool for automatic discovery of meter a...

Page 12: ...eed up the discovery process significantly Serial Baudrate Communication speed The default is 2400 but this can differ for various meters see the meter documentation Serial Parity Communication parity...

Page 13: ...meters re check the M Bus connection in particular its polarity and the baudrate and parity configuration or try to look up these values in the documentation of your meter Repeat the search until you...

Page 14: ...ed by scan or written on the meter or in the meter documentation Set the Serial Baudrate and Serial Parity parameters see the meter or its documentation 3 Turn on the meter in the system change Enable...

Page 15: ...r is displayed Individual values can be turned on Enable and off Disable 8 Click Save to save your changes Important In order to find meter variables the meter must be enabled and saved It is not poss...

Page 16: ...WWW interface Home tab The Home tab displays current readouts of all enabled values of a meter together with status symbols The value is within its allowed range Saferange The value is out of its all...

Page 17: ...g in the Meter name value format Interval Time interval to be plotted You can select one of the pre defined intervals Hour Day Week Month Year or manually fill in the start date From and the end date...

Page 18: ...nformation about the operator of that particular HWg PWR if the device is accessible on a public IP Periodic restart Enables periodic restart of HWg PWR to prevent problems in noisy Ethernet networks...

Page 19: ...port number is useful in situations where multiple HWg PWR units need to be accessible from an external network through a router Ask your network administrator if or whether you need to change this va...

Page 20: ...ault is 161 SNMP Access section Community Name of the SNMP community for accessing HWg PWR over SNMP Two communities can be defined Each Community can have the following permissions defined o Read o W...

Page 21: ...cation Username Username for authentication to the SMTP server If the Authentication box is not checked this field is irrelevant Password Password for authentication to the SMTP server If the Authenti...

Page 22: ...igure system time and automatic synchronization with a timeserver SNTP Setup section SNTP Server IP address or host name of the time synchronization server Default is time nist gov Time Zone Timezone...

Page 23: ...bsequently find and configure the values provided by individual meters Device List section The Device List section lists all connected meters together with their type Medium and address Address on the...

Page 24: ...the M Bus The address is entered as one byte 0 255 Serial Baudrate M Bus communication speed for the particular meter By default 2400 Baud is configured Meters with different communication speeds can...

Page 25: ...given time period Logging Enabled Enables the recording of readouts into the internal memory Recording interval is specified at the Log tab When logging is enabled for fewer variables more records can...

Page 26: ...reached E Mail if Change State Specifies whether an e mail should be sent whenever an Alarm begins or ends SNMP Trap if change state Specifies whether a SNMP Trap should be send whenever an Alarm begi...

Page 27: ...ed http hwg pwr hwg cz HWg PWR_Config bin Online values in XML Address of a XML file with current readouts Intended for automated processing at remote servers http hwg pwr hwg cz values xml SNMP MIB T...

Page 28: ...HWg PWR M Bus IP energy meter SNMP WEB HW group www HW group com page 28 Mechanical...

Page 29: ...HWg PWR M Bus IP energy meter SNMP WEB HW group www HW group com page 29...

Page 30: ...HWg PWR M Bus IP energy meter SNMP WEB HW group www HW group com page 30...

Page 31: ...HWg PWR M Bus IP energy meter SNMP WEB HW group www HW group com page 31...

Page 32: ...ricity meter with M Bus ED 310 DB HWG Three phase two tariff 63A electricity meter with M Bus and S0 M Count 2C Converter and datalogger 2x pulse output S0 M Bus Manufacturer HW group s r o Rumunsk 26...

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