PRO AIR TPK 21 - Modbus; Supported MODBUS Features; Supported MODBUS Commands

13. Modbus
13.1. Supported MODBUS features
13.2. Supported MODBUS commands
103
The TPK series pressure dew-point monitor is equipped with a Modbus RTU interface. The
following points describe the MODBUS slave functionality.
Parameter
Value(s)
Device type
Slave
Baud rates
9600, 19200, 38400, 57600, 115200,230400,
460800, 921600 bps
MODBUS protocol
RTU over serial interface, ASCII over serial interface
Data size
RTU-mode - 8
ASCII mode - 7 bits
Stop bits
1
Parity
None, even, odd
Slave adress range
1….247
Broadcast
The devices follow the MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b3 and the
MODBUS over serial line specification and implementation guide V1.02.
The MODBUS communication over serial line settings and slave address can be configured over
SENCON.
For all/any command, if the slave’s address is not matched, an Exception 4 (Slave device error)
code will be returned to the MODBUS master device.!
The following MODBUS function codes are supported: