Instruction manual

2
IMR01H02-E3
2. SPECIFICATIONS
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RKC communication
Interface: Based on RS-422A, EIA standard
Based on RS-485, EIA standard
Based on RS-232C, EIA standard
(Specify when ordering)
Connection method: 4-wire system, half-duplex multi-drop connection (RS-422A)
2-wire system, half-duplex multi-drop connection (RS-485)
3-wire system, point-to-point connection (RS-232C)
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 subcategory 2.5, A4
Polling/selecting type
Error control: Vertical parity (With parity bit selected)
Horizontal parity (BCC check)
Communication code: ASCII 7-bit code
Termination resistor: Externally connected (RS-485)
Xon/Xoff control: None
Maximum connections: Multi-point mode (MA900/MA901)
RS-422A, RS-485: 32 instruments maximum including a host computer
RS-232C: 1 instrument
Single mode (MA900) *
RS-422A, RS-485: 26 instruments maximum including a host computer
RS-232C: 1 instrument
Single mode (MA901) *
RS-422A, RS-485: 13 instruments maximum including a host computer
RS-232C: 1 instrument
* As the address setting range is from 00 to 99, addresses corresponding to four
MA900s or eight MA901s are used in the single mode.
Therefore, the connectable number of sets is limited.