10. SPECIFICATIONS
IMR02C15-E4
10-16
 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: When the data written exceeds the setting range
Termination resistor: Externally terminal connected (Example: 120 Ω, 1/2 W)
Maximum connections: 31 controllers
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