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Siemens MICROMASTER 6SE6400-2FA01-4BC0

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6SE6400-2FA01-4BC0

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The Siemens 6SE6400-2FA01-4BC0, belonging to the MICROMASTER series, is a comprehensive communication interface designed for effective control and data transmission. Utilizing RS-485 technology, this unit operates using a half-duplex communication method, adhering to a master-slave principle for organized data exchange.

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Technical specifications for 6SE6400-2FA01-4BC0

ManufacturerSiemens
Product LineMICROMASTER
Part Number6SE6400-2FA01-4BC0
UPC783087598409
Weight1.00 lbs (0.45 kg)
Communication InterfaceRS-485
TopologyLine topology
Data TransferHalf-duplex, master-slave principle
Baud rates supported300 bps to 187.5 kbps
Baud rates recommended9600, 19200, 38400, 187500 bps
STXStart character (02 hex)
LGETelegram length (1 byte)
ADRAddress byte
PKW (Parameter ID Value)Parameter access (read/write)
PZD (Process Data)Control/status words, setpoints/actual values
BCCBlock check character (XOR of all bytes)
CableScreened, twisted pair
Termination150 Ω resistors at both bus ends
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The 6SE6400-2FA01-4BC0 by Siemens represents a significant component in the MICROMASTER series, focusing on RS-485 communication. This unit is built utilizing a line topology, which enables the establishment of straightforward network layouts. Operating within a half-duplex framework, it employs a master-slave approach, facilitating organized data transactions.

This communication device is capable of supporting a variety of baud rates, specifically from 300 bps to 187.5 kbps, with recommended settings that include commonly used configurations such as 9600, 19200, and 38400 bps. The component starts its communication with an STX character (02 hex), followed by the telegram length, specified as 1 byte. An address byte is included for identifying specific devices within the network structure.

The PKW parameter indicates the ability to read or write parameter values, while the PZD element handles process data transmission, encompassing control and status words as well as both setpoints and actual measured values. Data integrity is ensured with the implementation of a BCC, which is the exclusive OR (XOR) of all data bytes sent.

For physical connections, a screened twisted pair cable is required, promoting reduced signal interference. Termination of the bus is achieved with the installation of 150 Ω resistors at both extremities, ensuring reliable and effective communication. This component also incorporates a Class A EMC filter, enhancing its compliance with electromagnetic compatibility standards.