Lufft 8610.U050, Руководство по эксплуатации

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Operating Manual ARS31(Pro)-UMB
G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany
24
Address (2 bytes = 16 bits)
Bits 15
– 12 (top 4 bits)
Bits 11
– 0 (bottom 12 bits)
Class ID (0 to 15) Device ID (0
– 4095)
0 Broadcast 0 Broadcast
4
ARS31PRO-UMB/ARS31-UMB
Active Road Sensor
1 - 4095 Available
15 Master or control devices
ID = 0 is provided as broadcast for classes and devices respectively. Hence it is possible
to transmit a broadcast on a specific class. However, this only makes sense if there is only
one device of this class on the bus.
7.1.3 Examples for creating addresses
If, for example, an ARS31PRO-UMB/ARS31-UMB is to be given device address ID 0001,
this is done as follows:
Class ID for ARS is 4d = 4h
Device ID is e.g. 001d = 001h
Putting the class and device IDs together gives an address of 4001h (16385d).
7.1.4 Example of a binary protocol request
If, for example, a request for the current freezing temperature (measurement range -40 ...
0) is to be placed from a PC to a road sensor with device ID 0001, this is done as follows:
Sensor:
Class ID for road sensor is 4 = 4h
Device ID (serial number) is 0001 = 001h
Putting the class and device IDs together gives a destination address of 4001h.
PC:
Class ID for PC (master device) is 15 = Fh
PC ID is e.g. 1 = 001h
Putting the class and PC IDs together gives a sender address of F001h
The length <len> for the online data request command 4d = 04h,
the command for the online data request is 23h and
the version number of the command is 1.0 = 10h.
The channel number is shown under <payload>; as can be seen from the channel list, the
current freezing temperature (-40°C ... 0°C) in channel 151d = 97h
The calculated CRC is C4D6h
The request to the device:
SOH <ver> <to> <from> <len> STX <cmd> <verc> <channel> ETX <cs> EOT
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
01h 10h 01h 40h 01h F0h 04h 02h 23h 10h 97h 00h 03h D6h C4h 04h
The response from the device:
SOH <ver> <to> <from> <len> STX <cmd> <verc> <status> <channel> <typ>
1 2 3 4 5 6 7 8 9 10 11 12 13 14
01h 10h 01h F0h 01h 40h 0Ah 02h 23h 10h 00h 97h 00h 16h
<value> ETX <cs> EOT
15 16 17 18 19 20 21 22
66h 66h 96h C1h 03h FFh EAh 04h
<status>
= Device o.k.
<typ> = Data type of the following value; 16h = float (4 bytes, IEEE format)
<value> = C1966666h corresponds to float value
–18.8°C.