Tabla De Contenido - Trumeter 898X Serie Manual De Instrucciones

Table of Contents
1 Description
2 Important notice
3 Interface
3.1 Optional RS485 board
3.2 Device connection recommended by the Modbus Organization [1]
3.3 Interface configuration
3.4 Programming
4 CR/LF protocol
4.1 Transmission
4.1.1 Transmission principle for data source main counter, batch counter or totalizer
4.1.2 Transmission principle for data source main and batch counter / main counter and
totalizer
5 MODBUS protocol
5.1 Master - Slave principle
5.2 Transmission principles
5.3 Timeout
5.4 Message cycle
5.5 Byte order
5.6 Structure of a message
5.7 Function codes
5.8 Data values
5.8.1 Float format (32 bits)
5.8.2 Integer format (32 bits)
5.9 CRC (cyclic redundancy check)
5.10 Reading several registers
5.11 Writing several registers
5.12 Identification
5.13 Error protocol
5.14 Registers
5.15 Message transmission examples
5.15.1 Example Read
5.15.2 Example Write
5.15.3 Example Identification
6 Parameter sets
7 Technical data
7.1 Pulse counter
7.2 Frequency meter
7.3 Timer
8 Frequencies (typical)
8.1 Pulse counter
8.2 Frequency meter
9 Help texts
10 References
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