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Supported device types and versions
Communication line configuration
Communication line station configuration
I/O tag configuration
Literature
Changes and modifications
Document revisions
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The protocol supports the communication with devices with ELCOR-2 and microELCOR-2 devices (made by company the ELGAS company ) that recalculate a gas quantity.
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The asynchronous transmission parameter parameters are set according to the setting of a specific device.
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Communication station configuration
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- Communication protocol: Elcor ELGAS-2 (CP II).
- Station address:
- Node address: value in the range of 0 to 65535.
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- Address: meter address, a value in the range of 0 to 255.
- If
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- both addresses are 0, the device must answer obligatorily.
Password for reading: maximum of 6 characters is allowed if the password is set in the device (only ELCOR-2 only).
Station protocol parameters
Configuration dialog box - tab „Parameters".
They influence some optional parameters of the protocol. Following station protocol parameters can be set:
Table 1
| Full name | Meaning | Unit | Default value |
|---|
| Selection of device type. | ELCOR-2 or microELCOR-2 | ELCOR-2 |
|
Delay | The delay between request |
retry | retries in case of a communication failure. |
|
| 3 |
| Delay after sending the request before reading the response. | ms | 100 ms |
| Delay between response readings |
till its completing| until it is completed. | ms | 100 ms |
| Retry count of response reading |
till its completing. | until it is completed. |
| 30 |
| Static - configuration data read period ( |
only | microELCOR-2 only). | min | 60 min |
Hourly Archive Periodic Reading | A period for the reading |
value | of hourly archives (0-60 min). Value 0 disables the reading. | min | 0 min |
| Length of 'wake-up' |
of entered call | request after a longer communication pause. | 0 .. 50 bytes | 25 bytes |
| Insert 'wake-up' data sequence before each |
query| request. | YES/NO | NO |
| Form 'wake-up' data sequence from the specified characters |
that has this value| . | 0 .. 255 | 255 |
| Group source address (address of the D2000 KOM process). | 0 .. 65535 | 0 |
| Source address (address of the D2000 KOM process). | 0 .. 255 | 0 |
| Full Debug |
High | A high level of communication tracking, the |
loaded | received values of I/O tags and other debug information |
are I/O tag configuration
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Possible value types of I/O tags: Di, Ai, Ci, TxtI, TiA.
Device The ELCOR-2 device
Table 2 contains the list of main parameters of the device.
Tables 3 to 8 contains the list of variable configuration and informative data according to the parameter type. DESC(ind) parameter represents the common data of all parameters. It describes the quantity. The current value of quantity can be acquired by the configuration of the I/O tag with numerical address - index ind (number from 1 and morehigher). To find out the technical units - configure text of I/O tag with address UNIT(ind).
Table 2 - Device parameters - Main device parameters
| Object description | Value type | Address | Units |
|---|
Serial | The serial number of the device | Ci, TxtI | SN |
|
|
| Referential temperature | Ai | TB | °C |
| Referential pressure | Ai | PB | kPa |
| Firmware version | TxtI | FW |
|
|
| CO2 concentration | Ai | TAB(0) | % |
| N2 concentration | Ai | TAB(1) | % |
| Heat of combustion | Ai | TAB(2) | MJ/m3 |
| Relative density | Ai | TAB(3) |
|
|
| H2 concentration | Ai | TAB(4) | % |
| H2S concentration | Ai | TAB(5) | % |
| He concentration | Ai | TAB(6) | % |
| H2O concentration | Ai | TAB(7) | % |
| O2 concentration | Ai | TAB(8) | % |
| Ar concentration | Ai | TAB(9) | % |
| CO concentration | Ai | TAB(10) | % |
| C1H4 concentration | Ai | TAB(11) | % |
| C2H6 concentration | Ai | TAB(12) | % |
| C3H8 concentration | Ai | TAB(13) | % |
| iC4H10 concentration | Ai | TAB(14) | % |
| nC4H10 concentration | Ai | TAB(15) | % |
| iC5H2 concentration | Ai | TAB(16) | % |
| nC5H2 concentration | Ai | TAB(17) | % |
| C6H14 concentration | Ai | TAB(18) | % |
| C7H16 concentration | Ai | TAB(19) | % |
| C8H18 concentration | Ai | TAB(20) | % |
| C9H20 concentration | Ai | TAB(21) | % |
| C10H22 concentration | Ai | TAB(22) | % |
Table 3 - Device parameters - Analogue parameter Analog values
| Object description | Value type | Address | Units |
|---|
Analogue parameter | Analog value - transducer serial No. | TxtI, Ci | SN(ind) |
|
| Analog value |
Analogue parameter | - the upper limit of measuring range | Ai | HL(ind) |
|
| Analog value |
Analogue parameter | - the lower limit of measuring range | Ai | LL(ind) |
| Analogue parameter
|
| Analog value - technical units | TxtI | UNIT(ind) |
| Analogue parameter
|
| Analog value - name | TxtI | DESC(ind) |
Table 4 - Device parameters - Counter
| Object description | Value type | Address | Units |
|---|
| Counter - serial number of gas meter | TxtI, Ci | SN(ind) |
|
|
| Counter - technical units | TxtI | UNIT(ind) |
|
|
| Counter - name | TxtI | DESC(ind) |
Table 5 - Device parameters - Error counter
| Object description | Value type | Address | Units |
|---|
| Error counter - primary counter number | TxtI, Ci | CNT(ind) |
|
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| Error counter - technical units | TxtI | UNIT(ind) |
|
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| Error counter - name | TxtI | DESC(ind) |
Table 6 - Device parameters - Standard counter
| Object description | Value type | Address | Units |
|---|
| Standard counter - primary counter number | TxtI, Ci | CNT(ind) |
|
|
| Standard counter - calculation number | TxtI, Ci | CLC(ind) |
|
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| Standard counter - technical units | TxtI | UNIT(ind) |
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| Standard counter - name | TxtI | DESC(ind) |
Table 7 - Device parameters - Conversion factor
| Object description | Value type | Address | Units |
|---|
| Conversion factor - analogue (pressure) number | Ci | CNTP(ind) |
|
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| Conversion factor - analogue (temperature) number | Ci | CNTT(ind) |
|
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| Conversion factor - pressure error volume | Ai | DEFVALP(ind) | kPa |
| Conversion factor - temperature error volume | Ai | DEFVALT(ind) | °C |
| Conversion factor - compressibility error volume | Ai | DEFVALK(ind) |
|
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| Conversion factor - technical units | TxtI | UNIT(ind) |
|
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| Conversion factor - name | TxtI | DESC(ind) |
Table 8 - Device parameters - Standard flow rate
| Object description | Value type | Address | Units |
|---|
| Standard flow rate - primary flow number | Ci | CNT(ind) |
|
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| Standard flow rate - calculation number | Ci | CLC(ind) |
|
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| Standard flow rate - technical units | TxtI | UNIT(ind) |
|
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| Standard flow rate - name | TxtI | DESC(ind) |
| ...
The microELCOR-2 device
Address As an address of the I/O tag can be , also the data from column "Address" or "Default Alternate address" columns can be used.
Table 9 - Actual values
| Object description | Value type | Address | Default address | Units |
|---|
| Primary volume | Ai | OH.1 | V | m3 |
| Standard volume | Ai | OH.2 | VN | Nm3 |
| Error primary volume | Ai | OH.3 | VEST | m3 |
| Error standard volume | Ai | OH.4 | VNEST | Nm3 |
| Primary flow rate | Ai | OH.5 | Q | m3/hour |
| Standard flow rate | Ai | OH.6 | QN | Nm3/hour |
| Compressibility ratio | Ai | OH.7 | K |
|
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| Actual pressure | Ai | OH.8 | P | kPa |
| Actual temperature | Ai | OH.9 | T | K |
| Calculation number | Ai | OH.10 | Z |
|
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| Device temperature | Ai | OH.11 | TPR | °C |
| Operating value - rest (only in VF input) | Ai | OH.12 | VZB |
Table 10 - Service data
| Object description | Value type | Address | Default address | Units |
|---|
| Type + serial number | TxtI | SE.1 | VCE |
| Serial Serial
|
| The serial number of the temperature sensor | TxtI | SE.2 | VCT |
| | The serial number of the pressure transducer | TxtI | SE.3 | VCP |
Serial |
|
| Customer number | TxtI | SE.5 | CZ |
| | The serial number of the gas meter | TxtI | SE.6 | PVC |
|
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| Network address | TxtI | SE.7 | ADR |
|
|
| Constant of gas meter | Ci | SE.8 | KP | 0=1, 1=0.1, 2=0.01, 6=100, 7=10 |
| Measuring interval | Ci | SE.9 | IM |
|
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| Interval of data sending through a serial line | Ci | SE.10 | IV |
|
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| Start hour of the gas day | Ci | SE.11 | CD |
|
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| Start of measurement | TiA | SE.12 | DSM |
|
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| Date and time of the device | TiA | SE.13 | DAT |
|
|
| Battery capacity | Ci | SE.14 | BAT | % |
| Actual status | TxtI | SE.15 | OS |
|
|
| Configuration bytes | TxtI | SE.16 | KB |
| Communication rate of serial number
|
| The communication speed of a serial line | Ci | SE.17 | RK | 4=4800, 5=9600, 6=19200 |
| CRC 51 | Ci | SE.18 | C1 |
| |
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| Battery voltage | Ai | SE.23 | UPRHEX | V |
| Display configuration | Ci | SE.24 | KDIS |
|
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| Bits of permission to write the items | TxtI | SE.25 | W_RUN |
|
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| Customer's region | TxtI | SE.26 | REGION |
|
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| Saving interval in the hourly archive | Ci | SE.27 | IU |
|
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| Quantity of diff. pulses between IMP and IMP1 | Ci | SE.28 | IMP1_PI | 0=off, 255=on permanently |
| Input pulse ratio | Ci | SE.32 | I_V_DP |
| record | write permission in RUN by a user | Ci | SE.33 | WU_RUN |
|
|
| Actual status 2 | Ci | SE.34 | OS2 |
| Setting
|
| The setting of pulse ratio of gas meter VF on m3 | Ci | SE.35 | KPVF |
Table 11 - Parameters
| Object description | Value type | Address | Default address | Units |
|---|
| Base pressure | Ai | PA.1 | PN | kPa |
| Base temperature | Ai | PA.2 | PT | °C |
| Default pressure | Ai | PA.3 | PEST | kPa |
| Default temperature | Ai | PA.4 | TEST | °C |
| Default compressibility level | Ai | PA.5 | SK |
|
|
| Min. pressure limit | Ai | PA.6 | PMIN | kPa |
| Max. pressure limit | Ai | PA.7 | PMAX | kPa |
| Min. temperature limit | Ai | PA.8 | TMIN | °C |
| Max. temperature limit | Ai | PA.9 | TMAX | °C |
| Limit of max. flow rate | Ai | PA.10 | QMAX | m3/hour |
| Method of compressibility calculation | Ci | PA.11 | MK |
|
|
| CO2 concentration | Ai | PA.12 | KCO2 | % |
| N2 concentration | Ai | PA.13 | KN2 | % |
| H2 concentration | Ai | PA.14 | KH2 | % |
| Relative density | Ai | PA.15 | KD | % |
| Heat of combustion | Ai | PA.16 | KHON | kWh/m3 |
Table 12 - MinimaMinimums/maximamaximums
| Object description | Value type | Address | Default address | Technical units |
|---|
| Pressure |
under range| under the limit | Ai | MI.1 | PMMIN | kPa |
| Time of pressure under |
range above range| above the limit | Ai | MI.3 | PMMAX | kPa |
| Time of pressure |
above range| above the limit | TiA | MI.4 | DPMMAX |
| Temperature under range |
|
| The temperature under the limit | Ai | MI.5 | TMMIN | °C |
| Time of temperature |
under range| under the limit | TiA | MI.6 | DTMMIN |
| above range| above the limit | Ai | MI.7 | TMMAX | °C |
| Time of temperature |
above range| above the limit | TiA | MI.8 | DTMMAX |
above range| above the limit | Ai | MI.9 | QMMAX | m3/hour |
| Time of flow rate |
above range| above the limit | TiA | MI.10 | DQMMAX |
time (minima/maxima)| of minimums/maximums | TiA | MI.11 | DNUL |
Parameters and minimaand minimums/maxima maximums are read in a period which is set in protocol parameter value by the Static Data Read Period protocol parameter.
Literature
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- Ver. 1.0 - April 22th, 2009 - creating the creation of the document.
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