COM462RTU_D00010_04_M_XXDE / 06.2021 9
COMTRAXX® COM462RTU
2.5
Device features
• Setting of address data for the BMS bus and Modbus RTU and date and time setting
using the internal operating menu.
• Time synchronisation for all BMS bus devices
• Operation on the internal BMS bus
• Modbus RTU data access to the internal BMS bus, max. 150 BMS devices
• Commands can be sent from an external application (e.g. visualisation software) to BMS
devices and measured values read.
2.6
Possible applications
• The use of professional visualisation programs by converting BMS data to Modbus RTU
protocols.
• Observing and analysing Bender products that support communication, such as RCMS,
EDS and MEDICS® systems.
2.7
Details about the Modbus RTU
The Modbus RTU (Remote Terminal Unit) field bus has been specified by Modicon, a company
under the Schneider Automation brand and made available to the market license-free.
Modbus uses the serial hardware interface RS-485 and communicates via a two-wire, twisted
copper wire. A transmission rate of 19200 baud is standard.
• Master-slave communication
• Up to 32 bus devices per network, or up to 247 bus devices (with repeater)
• Baud rate between 1200 and 57600 bit/s
• Diagnostics mechanisms
