10. SPECIFICATIONS
IMR02C15-E4
10-15
Communication [optional]
RKC communication
Interface: Based on RS-485, EIA standard
Connection method: 2-wire system, half-duplex multi-drop connection
Synchronous method: Start/Stop synchronous type
Communication speed: 2400 bps, 4800 bps, 9600 bps, 19200 bps
Data bit configuration: Start bit: 1
Data bit: 7 or 8
Parity bit: Without, Odd or Even
Stop bit: 1 or 2
Protocol: ANSI X3.28-1976 subcategory 2.5, A4
RKC communication protocol
Polling/Selecting type
Error control: Vertical parity (With parity bit selected)
Horizontal parity (BCC check)
Communication code: JIS/ASCII 7-bit code
Termination resistor: Externally terminal connected (Example: 120 Ω, 1/2 W)
Xon/Xoff control: None
Maximum connections: 31 controllers
Signal logic: RS-485
Signal voltage Logic
V (A) − V (B) ≥ 2 V 0 (SPACE)
V (A) − V (B) ≤ −2 V 1 (MARK)
Voltage between V (A) and V (B) is the voltage of (A) terminal
for the (B) terminal.
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