KROHNE UFC 400 Modbus EN - Manual (Page 31)

APPENDIX
8
31
UFC 400
www.krohne.com 05/2013 - 4002744801 - AD Modbus UFC 400 R01 en
8.4 Number format
• Hexadecimal values are written in the format 0xNNNN, where NNNN is the hexadecimal
value.
• Decimal values are written in the format 0dNNNN or NNNN, where NNNN is the decimal
value.
8.5 Glossary
RTU Remote Terminal Unit mode is a Modbus serial transmission mode
RS232 TIA/EIA-232 Standard
RS485 TIA/EIA-485 Standard
Master/Client A device that polls one or more slave devices and always initiates
communication
Slave/Server A device that responds to requests from a master and never initiates
communication
CRC Cyclic Redundancy Checksum
Register A Modbus data object corresponding to a word (16 bits)
Coil A Modbus data object corresponding to a single bit
LSB Least Significant Byte
MSB Most Significant Byte
lsb least significant bit
msb most significant bit