Hitachi L200 Manual Do Utilizador

L200 Inverter

Appendix B

• A function command is set here.

• The data format used in the L200 series is corresponding to the Modbus data format 

below.

Specify a function you want to make the inverter execute. Function codes available to the 
L200 series are listed below.

Modbus-RTU uses CRC (Cyclic Redundancy Check) for error checking.

• The CRC code is 16-bit data that is generated for 8-bit blocks of arbitrary length.

• The CRC code is generated by a generator polynomial CRC-16 (X16+ X15+ X2+ 1).

Latency is the time between the reception of a query from the master and transmission of 
a response from the inverter.

• 3.5 characters (24 bits) are always required for latency time. If the latency time shorter 

than 3.5 characters, the inverter returns no response.

• The actual transmission latency time is the sum of silent interval (3.5 characters long) 

+ C078 (transmission latency time).

Coil

Binary data that can be referenced and changed (1 bit long)

Holding Register

16-bit data that can be referenced and changed

0 1 h

Read Coil Status

4

32 coils (in bits)

0 3 h

Read Holding Register

4

4 registers (in bytes)

0 5 h

Write in Coil

1

1 coil (in bits)

0 6 h

Write in Holding Register

1

1registers (in bytes)

0 8 h

Loopback Test

—

—

0 F h

Write in Coils

4

32 coils (in bits)

1 0 h

Write in Registers

4

4 registers (in bytes)