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Hivus communication protocol

Hivus communication protocol

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Supported device types and versions

The Hivus communication protocol supports communication with control units (RJ) and dataloggers (HDL) produced by Hivus. The communication was implemented and tested with the RJ-05e control unit. The control unit is used to time control of performance and regulation of desoster devices (air ozonizers).

Communication line configuration

  • Category of communication line: Serial, MOXA IP Serial Library

  • Parameters of the serial line:

    • Baud rate: 19200 Baud

    • Parity: optional
      Note: Parity MARK (sending the device address) and SPACE (all others) are set during transmission, so the parity setting is not important.

    • Handshaking: none

Note: communication on the Serial line was tested on computer serial port, virtual serial port corresponding to MOXA NPort device, and virtual serial port corresponding to Serial/USB converter USB-COM GemBird.
Communication on MOXA IP Serial Library line was tested through the use of MOXA NPort 5450I.

Communication station configuration

  • Communication protocol: Hivus Controller

  • Station address: 1 Byte.
    Address 0 is "broadcast" (each device responses to it, but only on reading by 02h function). I/O tag - type 105 (logger number) is used to detect the real address of the device.
    Addresses 1-255 represents the common addresses of devices (04h function is used to read data).

  • Time parameters - recommended polling period is 1 min (to avoid overloading the processor of the control unit by very frequent communication).

Station protocol parameters

Configuration dialog window - Communication station - field "Protocol parameters".
These parameters influence some optional parameters of the protocol. The following parameters can be used:

Tab. č. 1

Keyword

Full name

Description

Unit

Default value

DBGI

Debug Input

Value 1 activates the listing of information about received values of I/O tags in the trace file of the line in the format:
In I/Otag_name = value

-

2

DBGO

Debug Output

Value 1 activates the listing of information about written values of I/O tags in the trace file of the line in the format:
Out I/Otag_name = value

-

2

RAW

Read After Write

If the parameter is True, the writing of value (by 05h function) is followed by reading.
Note: Reading does not relate to date and time settings that are done by the protocol function 01h (see I/O tag 121).

-

False

I/O tag configuration

Possible value types of I/O tag: Ai, Ao, Ci, Di, TxtO, TxtI.

I/O tag address is written in the format:

  • T=type - I/O tags without index

  • T=type;I=index - I/O tags with index (channels and signalization of failures on desoster)

  • T=type;I=index;J=index; - I/O tag contains raw data of protocol with address 100

The header, which is read from the control unit by the KOM process, contains the information that is mapped into I/O tags without an index (e.g. moto hours worked, number of engaged channels, type of control unit), information about channels and signalization of failures on desosters.
There can be configured 0 up to 8 channels. Each channel is defined by characteristics (1-15, see table below), value, upper/lower limit (something like upper/lower limit in D2000). The channels can be addressed in two ways:

  1. consecutive number 1-8:

    • instantaneous value is addressed by T=16, I=1..8 in I/O tag,

    • type is addressed by T=17, I=1..8 in I/O tag

    • upper limit is addressed by T=18, I=1..8 in I/O tag

    • lower limit is addressed by T=19, I=1..8 in I/O tag

  2. order within channels with particular characteristics. Instantaneous value of i-th measurements with characteristic t is addressed by T=t, I=i.
    For example, instantaneous value of third measurement of type 1 [temperature] is defined by T=1, I=3 no matter on which channel this temperature occurs.

Signalization of failures on desoster enables to read the statuses of desoster 1..10 that are connected to concentrator 1 (T=101) or concentrator 2 (T=102).

These I/O tags can be configured:

Table 1 - I/O tags for channels

Address

Value type

Meaning

T=type;I=index

Ai, Ci, Di

Reading of instantaneous value of measurement of typ type, which is index-th in order.
Index can be from range 1..8.
Type can be from range 1..15 according to table below:

Type

Description

1

Temperature (°C)

2

Relative humidity (%)

3

Ozone concentration (ppm - parts per million)

4

Pressure (kPa)

5

Flow (m3/hour)

6

Air quality (ppm)

7

VOC - Volatile organic compounds (ppm - parts per million)

8

Flow velocity (m/s)

9

Toxicity (%)

10

Intensity (%)

11

NH3 concentration (ppm - parts per million)

12

CO concentration (ppm - parts per million)

13

State of blocking sensor (0/1)

14

Dew point (%)

15

State of the fan (0/1)


Example of address: T=8;I=1 - I/O tag will contain the instantaneous value of flow velocity that is first in order. If type 8 (flow velocity) is not configured on any of channels 1..8, I/O tag value will be invalid.

Note: Instantaneous value of the channel can have a flag indicating the unconnected sensor. This flag is mapped to an attribute of "WEAK" value in D2000. If the instantaneous value from the example mentioned above should have a flag indicating the unconnected sensor, it should be probably 0 with an attribute "WEAK".

T=16;I=index

Ai, Ci, Di

Reading of instantaneous value of channel with index. The index can be from range 1..8.
Example of address: T=16;I=2 - I/O tag will contain the instantaneous value of channel 2.

Note: Instantaneous value of the channel can have a flag indicating the unconnected sensor. This flag is mapped to an attribute of "WEAK" value in D2000. If the instantaneous value from the example mentioned above should have a flag indicating the unconnected sensor, it should be probably 0 with an attribute "WEAK".

T=17;I=index

Ai, Ci

Reading of channel characteristics with index. The index can be from range 1..8.
Example of address: T=17;I=2 - I/O tag will contain the characteristics of channel 2.

Note: The characteristics can be from range 1..15 with the meaning stated in the table or invalid if no sensor is connected to the channel.

T=18;I=index

Ai, Ci

Reading of upper limit of the channel with index. The index can be from interval 1..8.
Example of address: T=18;I=2 - I/O tag will contain the upper limit of channel 2.

Note: The value is invalid if no sensor is connected to the channel.

T=19;I=index

Ai, Ci

Reading of lower limit of the channel with index. The index can be from interval 1..8.
Example of address: T=19;I=2 - I/O tag will contain the lower limit of channel 2.

Note: The value is invalid if no sensor is connected to the channel.

Table 2 - I/O tags - raw data from the protocol

Address

Value type

Meaning

T=100;I=index;J=index

TxtI

Reading the raw data from the protocol header into the text I/O tag. "I" and "J" indicates the beginning and end byte (1-128), and this condition must be valid: I<=J.
For example I/O tag with address T=100;I=113;J=128 (bytes 113-128 from header) contains a comment from printer (it is the same as I/O tag T=110).
For example I/O tag with address T=100;I=27;J=29 (bytes 27-29 from the header) contains the type of device (it is the same as I/O tag T=106
).

Note: These I/O tags are intended for specialists and for future extension of the protocol.

Table 3 - I/O tags relating to fault conditions of desoster

Address

Value type

Meaning

T=101;I=index
T=102;I=index

Ai, Ci, Di

Reading of signalization of device failure with an index that is connected to concentrator No. 1 (if T=101) or concentrator No. 2 (if T=102).
If the index is from the range 1..10, the I/O tag value will contain the information about the failure on a particular desoster (according to the value 0/1, False/True).
If index=0, the I/O tag will contain the information about all 10 desosters as integer (status of desoster 1 in 1. bit up to desoster 10 in 10. bit)
Example of address: T=101;I=2 - the I/O tag will read the failure signal of desoster 2 that connected with concentrator 1.
Note: If the information in the protocol contains a bit, which signalizes "concentrator is not connected", the value of the I/O tag will be Invalid.

Table 4 - I/O tags without indexes

Address

Value type

Meaning

T=103

Ai, Ci

Worked moto hours - value from range 0-999 999.

T=104

Ai, Ci

The number of connected sensors - value from range 0-8. The channels with connected scanners have valid values (I/O tags of types 1 to 19 - see table 1), other channels have invalid values.

T=105

Ai, Ci

The control unit number (equal to the station address). It is used to detect the real address of the station if the station address will be 0 (broadcast).

T=106

TxtI

3-sign string that defines the type of device:

  • HDL - Hivus Data Logger

  • RJB - control unit without a fan

  • RJV - control unit with fan

T=107

Ai, Ao

Setpoint for controlling ozone (O3) in ppm. Also, the writing of value is supported (the protocol function 05h).

T=108

Ai, Ao

The threshold for an indication of the O3 level in ppm. Also, the writing of value is supported (the protocol function 05h).

T=109

TxtI, TxtO

16-sign string - upper and lower limits for the printer. Also, the writing of value is supported (the protocol function 05h).
Note: Presently, this string contains only a protocol-encoded setpoint for controlling ozone and threshold of ozone indication, therefore it is recommended to read and write values by I/O tags T=107 and T=108.

T=110

TxtI, TxtO

16-sign string - comment of print. Also, the writing of value is supported (the protocol function 05h).
Note: This I/O tag is also used to set a control band, blocking sensor, signalization, language, to switch manual/automatic mode, to set parameters of modes, etc. For more information, see the documentation for communication protocol.

T=121

TxtO

Writes values to control unit (by protocol function 01h). Supported values:

  • time - format of value: Thhmmss (hh-hour, mm-minute, ss-second), e.g. T142030 means a time 14:20:30

  • date - format of value Dddmmyyw (dd-day, mm-month, yy-year, w-weekday: Monday=1 .. Sunday=7), e.g. D2304153 means date 23.4.2015, Wednesday

T=122

TxtI, TxtO

Writes 32-bytes of limit values into the control unit (by the protocol function 05h).
Note: The first 16 bytes is equal to the I/O tag with address 109, the other 16 bytes are equal to the I/O tag with address 110. It is recommended to read and write values by I/O tags T=107, T=108, and T=110.

Literature

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Changes and modifications

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Document revisions

  • Ver. 1.0 - April 23, 2015 - creating the document

Related pages:

Communication protocols

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