Advertisement
TUF-2000F User Manual
This ratio would be used to check the transducer installation. If the pipe parameters are entered correctly
and the transducers are installed properly, the value for this ratio should be in the range of 100±3. If this
range is exceeded, the user should check:
(1) If the pipe parameters are correctly entered.
(2) If the actual spacing of the transducers is right and the same as what the window M25 shows.
(3) If the transducers are installed properly in the right directions.
(4) If the mounting location is good and if the pipe has changed shape or if there is too much fouling inside
the pipes
(5) Other poor condition
5. Communication Protocols
TUF-2000F has an isolated serial port, the RS485.
TUF-2000F can support more than 4 different communication protocols by the same time;
include MODBUS-ASCII, ASCII-RTU, Meter-BUS, the Fuji Extended Protocol and more than
10 compatible communication protocols used by Huizhongs flow meters.
MODBUS is a very commonly used industrial protocol. Both the RTU and the ASCII format of
MODBUS is supported
The Fuji Extended Protocol is developed based on the protocol used in a Japanese ultrasonic
flow meter. It is totally compatible with that of Version 7 flow meter.
TUF-2000F can be used as a sample RTU terminal. The 4-20mA output in the TUF-2000F
can be used to open an analog proportional valve; The OCT output can be used to control the
turn-on and turn-off of other devices such as a pump. The analog input can be used to input
pressure or temperatures signals.
There is a programmable device address (or ID number) located at window M46. When
TUF-2000F is used in a network, all the parameters of the flow meter can be programmed
through the network, except the device address that needs the keypad.
At most occasions, data should be obtained by polling the flow mete with a command, the flow
meter will respond with what the master asks.
TUF-2000F can also set to automatically output data at a period which is programmable.
The TUF-2000F also has a special command sets to facilitate the use of the flow meter in a
GSM network.
5.1 The MODBUS protocol
Both the two formats of the MODBUS protocol can be supported.
A software switch located at the window number 63(shorted as M63 after) select
MODBUS-ASCII or MODBUS-RTU will be in functioning.
The default option is MODBUS-ASCII format.
TUF-2000F can only support MODBUS functions code 3 and code 6, i.e. reading registers
and writing a register.
20
Advertisement
