Saia-Burgess Controls AG
Bahnhofstrasse 18 I CH-3280 Murten I Schweiz
T +41 26 580 30 00 I F +41 26 580 34 99
www.sbc-support.com
Technical data S-Bus
Bus system
S-Bus
Transmission rate
4800-9600-19'200-38'400-57'600-115'200.
The transmission rate is automatically detected
Transmission mode
Data
Bus length (max.)
1200 m (without repeater)
Response time:
Write: 60ms
(to system response)
Read: 60ms
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The Interface works only if the Phase 1 is connected.
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The communication is ready 30s after the Power On
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The use of Energy meter in bus with intensive communication could reduce the performance of the Bus
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Refresh Time for the Data is 10s. For this reason one energy meter should be not polled faster as 10s.
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254 Devices could be connected to the S-Bus. Over 128 Devices, a repeater should be used.
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The Interface don’t have a terminal resistor, this should be provided external.
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For a description of the used Registers please look at the Register Page
Data transmission
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Only «read/write» register instructions are recognized.
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Only one register can be written at a time.
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The device will respond «NAK» if more than 1 register is written.
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Up to 10 Registers could be read at a time.
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The device will respond «NAK» if more than 10 registers are read.
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The device will not respond to any unknown query.
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The device has a voltage monitoring system. In case of voltage loss, registers are stored in EEPROM
(transmission rate etc.)
Change the S-Bus address direct on device
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To modify the S-Bus address, press 3 sec on
►
touch
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In menu,
▼
increase address by 10,
►
increase by 1
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Once the address is selected wait for the root menu to come back
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