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5. Communication Specifications
5-1. MODBUS
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Communication system
: Half duplex asynchronous system (Polling selecting system)
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Protocol
: MODBUS protocol
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Communication speed
: 38400,19200,9600,4800,2400bps switching
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Start bit
: 1 bit
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Data length
: 7 bits (ASCII mode)
8 bits (RTU mode/ASCII mode)
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Parity bit
: None/even/odd
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Step bit
: 1 bit/2 bits
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Transmission code
: ASCII (ASCII mode)
Binary (RTU mode)
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Error check
: LRC (ASCII mode)
(Error detection)
CRC-16 (RTU mode)
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Data transmission procedure : No procedure
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Usage signal name
: Sending and receiving data only(Without using the control signal)
5-2. PRIVATE
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Communication system
: Half duplex asynchronous system (Polling selecting system)
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Protocol
: PRIVATE protocol
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Communication speed
: 38400,19200,9600,4800,2400bps switching
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Start bit
: 1 bit
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Data length
: 7 bits
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Parity bit
: Even
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Stop bit
: 1 bit
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Transmission code
: ASCII code
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Error check
: BCC (Block check character)
Check sum
(Error detection)
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Data transmission procedure
: No procedure
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Usage signal name
: Sending and receiving data only (Without using the control signal)