![RKC INSTRUMENT REX-F9000 Communication Instruction Manual Download Page 7](http://html1.mh-extra.com/html/rkc-instrument/rex-f9000/rex-f9000_communication-instruction-manual_1466684007.webp)
IM9000F02-E2
1
1. SPECIFICATION
(1) Interface :
Based on EIA standard RS-485
(2) Connection method :
2-wire system, half-duplex multidrop connection
(3) Communication distance :
1 km (max.)
* However, the maximum communication distance varies slightly
with the surroundings such as cables etc.
(4) Synchronous method :
Start/stop synchronous type
(5) Communication speed :
1200 bps, 2400 bps, 4800 bps, 9600 bps, 19200 bps
(6) Data type :
RKC standard communication :
Start bit : 1
Data bit : 7 or 8
Parity bit : Unused or Used (Odd number or even number)
Stop bit : 1 or 2
Ladder communication :
Start bit : 1
Data bit : 8 (Fixed)
Parity bit : None
Stop bit : 1
(7) Protocol :
RKC standard communication :
ANSI X3.28 subcategory 2.5, A4
Polling/selecting type
Ladder communication :
Non-protocol type
(8) Error control (Only RKC standard communication) :
Vertical parity (With parity bit selected)
Horizontal parity (BCC check)
(9) Maximum connection :
RKC standard communication :
32 sets including a host computer
Ladder communication :
32 sets including a programmable controller