MODBUS LITE V5.01 parameter specification

MODBUS parameters "ebm-papst series 84 / 112 / 150 / 200"
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ebm-papst Mulfingen GmbH & Co. KG
Bachmühle 2 ·74673 Mulfingen, Germany ·Phone: [phone] ·Fax: [phone] ·www.ebmpapst.com ·[e-mail]
DocNo.: 634505DocNo.: 446144DocNo.:358982DocNo.:322523DocNo.:309753DocNo.:303997DocNo.:276241DocNo.:256078DocNo.:196392 ·Template: 2 dated 6 October 2003 ·File: ext001157859.doc ·Last printed 10/03/2015 15:13:00
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Form 1003
1.3.6 Commands with addressing via serial number
These commands also use the fan serial numbers for addressing:
An identifier for the fan serial number (6 bytes) is transmitted in the data section of the commands.
Only the fan that has the MODBUS address and serial number given in the command will react and respond.
The command with addressing using the serial number is made up of the standard command, to which
a serial number identifier is added after the command byte.
Serial number format:
For each fan, ebm-papst assigns an individual serial number. This serial number has 10 digits.
Format: YYWW00XXXX
YY : Production year
WW : Calendar week of production
00 : Fixed value 00
XXXX : Sequential number
The first 4 digits contain the production date (year/calendar week).
With the beginning of each production week, the number XXXX starts counting up from zero and is increased
by 1 for each fan. Each character can represent values from 0-9 and from A-Z. The maximum number of
characters that can be encoded for each digit is thus 36, i.e. 36
4
= 1,679,616 devices/week.
Example:
ebm-papst serial number: 09230012GY
Year of production: 09 (2009)
Calendar week: 23 (23)
Sequential no.: 12GY (49525)
Year of production and calendar week are each encoded as hex values in the command.
For the series number, each character is encoded as an ASCII value.
In the commands with addressing via the serial number, the serial number must be given in the following
manner:
Byte no. Meaning Example Corresponds to holding register
Byte 0: [Address]
Byte 1: [Command code]
Byte 2: Production year 0x09 (-> 2009) D1A4 MSB
Byte 3: Calendar week 0x17 (-> 23) D1A4 LSB
Byte 4: Sequential number 1st character 0x31 (-> 1) D1A3 MSB
Byte 5: Sequential number 2nd character 0x32 (-> 2) D1A3 LSB
Byte 6: Sequential number 3rd character 0x47 (-> G) D1A2 MSB
Byte 7: Sequential number 4th character 0x59 (-> Y) D1A2 LSB
The order depends on the sequence in which the serial number is stored in the holding registers D1A2 - D1A4
(see 2.45.1)!