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Elcor ELGAS Daniel communication protocol

Supported device types and versions  
Communication line configuration
Communication station configuration
I/O tag configuration
Literature
Changes and modifications
Document revisions

Supported device types and versions


The Protocol supports communication with gas-volume conversion devices ELCOR-94 (produced by ELGAS company) directly or through the DATCOM concentrator (tested with DATCOM-K1).

Communication line configuration


The asynchronous transfer parameters according to the specific device setting.

Communication station configuration


  • Communication protocol: Elcor ELGAS Daniel.
  • Station address: value from 0 to 255. If the address is 0, the device must reply obligatorily.


Station protocol parameters

A station configuration dialog - tab "Protocol parameters".
The protocols affected some of the protocol optional parameters. The following station protocol parameters can be entered:

Table No. 1

KeywordFull nameDescriptionMeasuring UnitDefault value
RC
Retry CountPoll repetition count in case of a communication error.
3
WFT
Wait First TimeoutFirst waiting for a response after sending the request.ms50 ms
WT
Wait TimeoutDelay between response readings until its finalization.ms50 ms
MWR
Max. Wait RetryRepetition count of response readings until its finalization.
60
FULL_DEBUG
Full DebugA high level of communication logging, received values of I/O tags are displayed.
NO
SRDTM
Static Data Read TimeoutStatic values reading period (1-240 min). Static value is a configuration constant ELCOR-94, see table No. 2.min60 min
HARDP
Hourly Archive Periodic ReadingA period for the reading of the values of hourly archives (0-60 min). Value 0 disables the reading.min0 min

I/O tag configuration


Possible I/O tag types: Di, Ai, Ci, TxtI, Ao, Co.

The address of the I/O tag is entered in the form of text as follows:

        [S]Group[B][Type][.Offset][.Bit]

where:

         S - Static value - it is read with the timeout which is defined by value of station protocol parameter Static Data Read Timeout.
           Group - number of GROUP, only one obligatory direct parameter
                 B - BCD coded number
                    Type - value type: 'F'-Float[4], 'c'-Char[1], 'L'-Long[4], 'U'-Ulong[4], 'i'-Int[2], 'u'-Uint[2]
                          .Offset - position in packet, implicitly at the beginning (0)
                                  .Bit - bit number 1..8


The following special addresses can be entered as a text:

NOStandardized volume, it is calculated internally according to the formula:  (G63 + G70 + (G37 * 1000000000)) * G30
OPThe current pressure, it is calculated internally according to the formula: G61 * G29
OTThe current temperature, it is calculated internally according to the formula:  G69 * G64
NPOThe current standardized flow, it is calculated internally according to the formula:  (G60 * G27) + G28

A typical addresses configuration of the ELCOR-94 device is shown in table No. 2:

Table No. 2

Object descriptionValue typeAddressMeasurement units
Battery statusInteger inputS35L%
Relative densityAnalog inputS17
CO2 concentrationAnalog inputS15%
N2 concentrationAnalog inputS16%
Impulse constantAnalog inputS30
Alternate compressibilityAnalog inputS22
Pressure lower limitAnalog inputS25kPa
Pressure upper limitAnalog inputS26kPa
Alternate pressureAnalog inputS21kPa
Referential pressureAnalog inputS19kPa
Flowage lower limitAnalog inputS32m3/hour
Flowage upper limitAnalog inputS33m3/hour
Temperature lower limitAnalog inputS23°C
Temperature upper limitAnalog inputS24°C
Alternate temperatureAnalog inputS20°C
Referential temperatureAnalog inputS18°C
Device, FW versionText inputS46
Customer numberText inputS4
Serial No. ELCOR-94Text inputS3
Gas meter serial No.Text inputS2
Temperature sensor serial No.Text inputS0
Pressure sensor serial No.Text inputS1
Momentary pressureAnalog inputOPkPa
Momentary operating flowageAnalog input69m3/hour
Momentary standardized flowageAnalog inputNPONm3/hour
Momentary temperatureAnalog inputOT°C
Accumulated error - pressure sensor errorLogical input71c.4.7
Accumulated error - pressure above maximumLogical input71c.4.2
Accumulated error - pressure under minimumLogical input71c.4.1
Accumulated error - flowage above maximumLogical input71c.4.6
Accumulated error - temperature sensor errorLogical input71c.4.5
Accumulated error - temperature above maximumLogical input71c.4.4
Accumulated error - temperature under minimumLogical input71c.4.3
Error - pressure sensor errorLogical input71c.3.7
Error - pressure above maximumLogical input71c.3.2
Error - pressure under minimumLogical input71c.3.1
Error - flowage above maximumLogical input71c.3.6
Error - temperature sensor errorLogical input71c.3.5
Error - temperature above maximumLogical input71c.3.4
Error - temperature under minimumLogical input71c.3.3
Grade of compressibility KAnalog input52
Standardized volumeAnalog inputNONm3
Diagnostics resetInteger output57
Alternate standardized volumeAnalog input67UNm3
Alternate operating volumeAnalog input66Um3
Operating volumeAnalog input62Um3
Current time - dayInteger input39Bc.3
Current time - hourInteger input39Bc.4
Current time - minuteInteger input39Bc.5
Current time- monthInteger input39Bc.2
Current time - secondInteger input39Bc.6
Current time - yearInteger input39Bc.1
Conversion number ZAnalog input64

The protocol supports reading from the ELCOR-94 data archive. It is possible to obtain the hourly records of the following values:

  • The current temperature (I/O with "OT" address),
  • The current pressure (I/O with "OP" address),
  • Operating volume (I/O with group "62" address),
  • Standardized volume (I/O with "NO" address).

Tell command GETOLDVAL starts the data archive reading.

Literature


  • ELCOR-94, Daniel - Protocol physical layer description 29.8.1996, ELGAS s.r.o.
  • Reference manuals of producer ELGAS s.r.o. http://www.elgas.cz

Changes and modifications


-

Document revisions


  • Ver. 1.0 - November 8th, 2007 - Document creation.
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