Atal TR485-103D-700 Manuál s instrukcemi stáhnout pdf (Strana 4)

Typical application wiring, connection of terminals

Info mode

If in doubt of setting of installed transmitter, verification of its address is enabled even

without using computer. Power should be connected.

Unscrew transmitter cover and shortly press button next to connection terminals (jumper

should be opened). Actual adjusted address of transmitter is displayed on LCD display at decimal

base. Next press of button exits info mode and actual measured values are displayed.

Note: No measurement and communication is possible during info mode. If transmitter stays in info

mode for longer than 15 s, transmitter automatically returns to measuring cycle.

Description of communication protocols

Detailed description of each communication protocols including examples of

communication is available in individual document “Description of communication protocols of

Txxxx series”.

Note: After switching ON the power of the device it can last up to 2 s before the device starts to

communicate and measure!

Modbus RTU

Control units communicate on master-slave principle in half-duplex operation. Only master

can send request and only addressed device responds. During sending of request no other slave

station should respond. During communication, data transfer proceeds in binary format. Each Byte

is sent as eight bit data word in format: 1 start bit, data word 8 bit (LSB first), 2 stop bits

, without

parity. Transmitter supports communication speed from 110Bd to 115200Bd.

Transmitter sends two stop bits, for receive one stop bit is enough.

1 2 3 4 5 6 7 8 9 10 11

Žádné komentáře

Atal TR485-103D-700 Manuál s instrukcemi Strana 4