(Communication Protocol; Modbus-Rtu); Communication Specifications; 9-1-1Standards - Unipulse F320 Operation Manual

9.RS-485 INTERFACE (Communication protocol; Modbus-RTU)
9. RS-485 INTERFACE

(Communication protocol; Modbus-RTU)

The RS-485 interface is used to read out the indicated value and the state of the
F320 and to write set values into the F320. It is convenient for connecting the
F320 with a PLC/programmable display, etc., to perform processing, such as
controlling, aggregating, and recording.

9-1. Communication Specifications

9-1-1. Standards
Signal level:
Transmission distance:
Transmission method:
Transmission speed:
Number of units connected: 32 at maximum(including one master)
Bit configuration:
71
B4 B5 B6
A- B+ S.G.
R
S-485 terminals RS-485 signal ground terminal
Based on RS-485
Approx. 1km
Asynchronous, half-duplex
Selectable from 1200, 2400, 4800, 9600, 19200,
and 38400bps
Start bit:
Character length:
Stop bit:
Parity bit:
1 bit
Fixed at 8 bits
Fixed at 1 bit
Selectable from none,
odd, and even