137
15
Specifications
137
S
pecific
ations
Chapter
15
■
Interface
SI/F two-wire serial interface
Transmitting method
Asynchronous
Transmitting speed
600bps
RS-485 Communication interface
Communication protocol
Selectable from Modbus-RTU, UNI-Format
Signal level
Based on RS-485 2-wire
Transmitting distance
Approx. 1km
Transmitting method
Asynchronous, half duplex
Transmitting speed
Selectable from 1200, 2400, 4800, 9600, 19200, 38400 bps
Number of connectible units
Maximum 32 (including 1 master unit)
Bit configuration
Start bit
1bit
Character length
Selectable from 7 or 8 bit
(8 bit for Modbus-RTU)
Stop bit
Selectable from 1 or 2 bit
Parity bit
Selectable from none, odd or even
Terminator
Selectable from CR, CR-LF
Code
Binary (for Modbus-RTU)
ASCII (for UNI-Format)
* SI/F and RS-485 cannot be simultaneously used (to be specified at the
time of order).
RS-485 (standard: not specified)
SI/F (SIF: to be specified at the time of order)