Connection To Rs-485 For Telenet Or Modbus- Rtu - Pego Vision Touch Wellness User And Maintenance Manual

VISION TOUCH WELLNESS
CONNECTION TO RS-485 FOR TELENET OR MODBUS-RTU
1) Example of connection between the console and the Modbus line:
It is recommended to connect a resistor equal to 120 between A and B at the beginning
and end of the line in case of communication problems.
For a correct functioning the Master has to have a RS485 polarized.
USER AND MAINTENANCE MANUAL
Pag. 18
3.7
Connect the earth to the GND
terminal of M3 in the console
(functional earth).
This connection helps to limit the
effects of the electromagnetic
noise on the control system.
The ground connection must be
made in a manner consistent with
applicable regulations.
Connect the terminal (A) of M3 in
the console to signal A of the
Modbus line and the terminal (B)
of M3 in the console to signal B of
the Modbus line. Connect the
braid of the shielded cable to the
terminal (GND) of M3 in the
console.
Use twisted cable suitable for the
transmission of RS485 signals
with minimum section of 0.5mm
(e.g. Belden 8762 cable). Avoid
coupling with power cables.
Rel 01-19
2