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MasterBus - Modbus
MASTERVOLT
Snijdersbergweg 93,
1105 AN Amsterdam
The Netherlands
Tel.: +31-20-3422100
Fax.: +31-20-6971006
www.Mastervolt.com
USER'S MANUAL
Interface
Interface from Modbus to MasterBus
ENGLISH:
NEDERLANDS:
DEUTSCH:
FRANÇAIS:
CASTELLANO:
ITALIANO:
Copyright © 2014 Mastervolt, v 1.4 September 201
PAGE 1
PAGINA 9
SEITE 17
PAGINA 25
PÁGINA 33
PÁGINA 41
4
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Summary of Contents for Mastervolt MasterBus
- Page 1 Interface from Modbus to MasterBus ENGLISH: PAGE 1 MASTERVOLT NEDERLANDS: PAGINA 9 Snijdersbergweg 93, DEUTSCH: SEITE 17 1105 AN Amsterdam FRANÇAIS: PAGINA 25 The Netherlands CASTELLANO: PÁGINA 33 Tel.: +31-20-3422100 ITALIANO: PÁGINA 41 Fax.: +31-20-6971006 www.Mastervolt.com Copyright © 2014 Mastervolt, v 1.4 September 201...
- Page 2 CAUTION! Never remove the identification label. 2 OPERATION MasterBus functions The Modbus communicates via MasterBus. For information about MasterBus, see www.mastervolt.com. The table below shows the interface functions. Monitoring Function Description Factory settings...
- Page 3 3 INSTALLATION Insert the MasterBus cables first, then connect the Modbus cables to the screw terminal, see figure below. 1. Modbus B line 2. Modbus A line 3. Modbus Ground 4. MasterBus communication LED MasterBus connector MasterBus network MasterBus network...
- Page 4 IDB, TabNr and Index using MasterAdjust. The MasterBus Device Address consists of 2 variables: IDB (18 bit value) and IDAL (5 bit value). These two variables are read out by MasterAdjust. September 2014 / MasterBus – Modbus Interface / EN...
- Page 5 0x217C1 (hexadecimal figure) communicate with. The picture below shows the IDAL 0x0E (hexadecimal figure) Monitoring tab (TabNr = 0). The mouse hint (right TabNr mouse button) of this variable shows Index: 1. Index EN / MasterBus – Modbus Interface / September 2014...
- Page 6 Byte Count 1 Byte 0x0C (Fixed) IDAL 5 bit value 1 Byte Variable 3 Bytes Variable TabNr 2 Bytes Variable Index 2 Bytes Variable Value 4 Bytes Variable 2 Bytes Calculated September 2014 / MasterBus – Modbus Interface / EN...
- Page 7 [0..255] Index Lo 0x01 [0..255] Value Lo (Float IEEE 754) 0x00 [0..255] Value Mi 0x00 Value Hi 0x80 [0..255] Value Exponent 0x3F [0..255] CRC Lo 0x94 [0..255] CRC Hi 0xC1 [0..255] EN / MasterBus – Modbus Interface / September 2014...
- Page 8 Enter a maximum 5 bit value. IDB value is too high Enter a maximum 18 bit value. The time out error occurs when there is Check if the MasterBus powering device is working and/or no response from MasterBus for three check the MasterBus wiring. seconds.
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