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
·Page 18 of 70
Form 1003
1.3.6.3 Write Single Register Addressed By Serial No.
Command code: 0x46
This command is used to write the content of one holding register.
In contrast to "MODBUS over Serial Line Specification & Implementation Guide V1.0", the fan also responds
to a broadcast command (MODBUS address = 0), provided that no broadcast identifier (0) is used in the serial
number. Because no two different fans can have the same serial number, it is not possible for more than one
fan to respond.
Command from master:
10 data bytes are transmitted:
 Serial No. byte 1
 Serial No. byte 2
 Serial No. byte 3
 Serial No. byte 4
 Serial No. byte 5
 Serial No. byte 6
 MSB holding register address
 LSB holding register address
 MSB data to be written
 LSB data to be written
The holding registers are described below.
Response from fan:
10 data bytes are transmitted:
 Serial No. byte 1
 Serial No. byte 2
 Serial No. byte 3
 Serial No. byte 4
 Serial No. byte 5
 Serial No. byte 6
 MSB holding register address
 LSB holding register address
 MSB data to be written
 LSB data to be written
The command from the master is repeated in the response.
Exception codes:
In case of error, only one data byte (the exception code) will be transmitted
Exception codes:
0x02: Permissible range of the holding registers 0xD000 to 0xD3FF exceeded.
0x04: There is no write access in this authorisation level (password).