31
7 OPTION
31
OPTION
Chapter
7
7-3. RS-485 interface
The RS-485 interface is used to read out the indicated value and the state of the F331 and to write
set values into the F331. It is convenient for connecting the F331 with a PLC/programmable
display, etc., to perform processing, such as controlling, aggregating, and recording.
Connector: M3 screw type terminal block (four-pole)
* Compatible solderless terminal within 5.9mm
Tightening torque 0.6N•m
■Communication specifications
Standards
Message format: Modbus-RTU, UNI-Format
Signal level: RS-485-compliant, two-wire
Transmission distance: Approx. 1km
Transmission mode: Asynchronous, half-duplex communication
Transmission speed: 1200, 2400, 4800, 9600, 19200, 38400bps selectable
Number of connectable units: Max. 32 (including one master)
Bit configuration: Start bit 1 bit
Length of character 7 or 8 bits selectable (8 bits for Modbus-RTU)
Stop bit 1 or 2 bits selectable
Parity bit None, odd, or even selectable
Code: Binary (for Modbus-RTU)
ASCII (for UNI-Format)
To Next Page
Loading...
