DK Digital CDB-700 Instruction Manual download pdf (Page 10)

2. SPECIFICATIONS

IMR02C16-E3

 Modbus

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: 8

Parity bit: Without, Odd or Even

Stop bit: 1 or 2

Protocol: Modbus

Signal transmission mode: Remote Terminal Unit (RTU) mode

Function code: 03H (Read holding registers)

06H (Preset single register)

08H (Diagnostics: loopback test)

Error check method: CRC-16

Error code: 1: Function code error

2: When the mismatched address is specified

3: When the specified number of data items in the query message exceeds

the maximum number of data items available

4: Self-diagnostic error response

Termination resistor: Externally terminal connected (Example: 120 Ω 1/2 W)

Maximum connections: Up to 31 controllers

 Loader communication

Connection method: Connection with a loader communication cable for RKC USB converter

COM-K (sold separately).

Synchronous method: Start-stop synchronous type

Communication speed: 9600 bps

Data bit configuration: Start bit: 1

Data bit: 8

Parity bit: Without

Stop bit: 1

• The data bit configuration is fixed.

• The device address is fixed to “0.”

Protocol: RKC communication protocol

(ANSI X3.28-1976 subcategories 2.5 and A4)

Maximum connections: 1 controller

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 81 82

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DK Digital CDB-700 Instruction Manual Page 10