Instruction manual

IMCB03-E5

1. SPECIFICATIONS

Interface

: Based on RS-485, EIA standard

Connection method

: 2-wire system, half-duplex multi-drop connection

Communication distance:

1 km max.

The maximum communication distance will be affected by

the surrounding conditions.

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

Xon/Xoff control:

None

Maximum connections:

32 instruments maximum including a host computer

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.