ABB LWT300 series, Руководство пользователя

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A ppENDIX B
Modbus registers
NOTICE
The map register offset in this Appendix is Base 0 (first register address is at 0).
Holding registers
The Holding registers consist of 16 bits. They can be read and written. The address (1 byte) is sent
before each command. A CRC (2 bytes) is sent after each command.
Register name Register
address Data type Value range Default
value Description
address 200 USIGN8 1 – 247 247 also known as Slave ID
Baud rate 201 TABENUM8 1 = 1200
2 = 2400
3 = 4800
4 = 9600
5 = 19200 4 = 9600 this is the baudrate used during Modbus
communication
parity 202 TABENUM8 0 = None
1 = Even
2 = Odd
0 this is the parity bit in the Modbus frame
Stop bit 203 TABENUM8 1 = One stop bit
2 = two stop bits 1 this is the number of stop bits in the
Modbus frame
Map Register
Offset 204 TABENUM8 0 = 0
1 = 1 1 this offset is added from the address
received in the Modbus frame message.
Defines the register base number
Delay time 206 USIGN8 1 – 200ms 50 ms Define the period of time before the LWt
sends out a response
Swap Mode 3000 TABENUM8 0 = aBCD,
1 = CDaB,
2 = DCBa,
3 = BaDC 1 = CDaB Define the byte order for the Floating
point Format Code register