Emerson Bettis RTS Kurulum, Kullanım ve Bakım Kılavuzu - Sayfa 5
Endüstriyel Ekipmanlar Emerson Bettis RTS için çevrimiçi göz atın veya pdf Kurulum, Kullanım ve Bakım Kılavuzu indirin. Emerson Bettis RTS 18 sayfaları. Extension board for modbus rtu
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Installation, Operation and Maintenance Manual
VCIOM-16741-EN Rev. 0
Section 1: Extension Board for Modbus RTU
1.1
General Information
For Bettis RTS actuators, the standardized fieldbus interface Modbus RTU is available.
This interface is a product option represented in hardware on the device, thus making it
beneficial to advertise intended use upon ordering. Although, enabling Modbus RTU a
posterior is possible, such upgrades should only be performed by authorized Emerson
engineers or specially trained personnel.
Modbus RTU determines technical and functional characteristics of the serial fieldbus
system used to connect distributed autonomous devices. Modbus RTU distinguishes
Master- and Slave-Devices and has been designed for data-transmission on field-level,
hence, the communication of central control units - as SPS or PC - with decentrale
field-devices over a fast serial connection. Communication functionality is standardized by
the MODBUS Organization (modbus.org).
The physical communication layer is based on a RS-485 interface connected through a
shielded twisted two-wire cable.
Bettis RTS control unit are always slave devices.
1.1.1
Communication Settings
The detection of the settings of the Modbus RTU communication is done automatically in
the Bettis RTS Modbus RTU slave module during communication start-up.
The supported baud rates are:
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The byte frame has the following bits:
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If mark parity is not supported by the Modbus RTU master, you can use no parity and 2 stop
bits instead.
Extension Board
on RTS Control Unit
4800 bps
7200 bps
9600 bps
14400 bps
19200 bps
28800 bps
38400 bps
57600 bps
76800 bps
115200 bps
1 start bit
8 data bits, LSB first
1 parity bit (even, odd or mark)
1 stop bit
Section 1: Extension Board
November 2021
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