Function Code For Mod-Bus (Rtu) In Inverter - Panasonic VF100 Instruction Manual

[CRC code]
CRC code is used for checking the error in message frame during data transmission. Transmit
side adds CRC code to message frame after calculation. Receive side also calculates CRC code
of the received data. Then the two CRC codes are verified.
CRC code is CRC-16(CRC-ANSI). It is determined and calculated by the right feed of HA001.
16 15 2
(x +x +x +1)
•E When the CRC code of received data is not correct, no processing is carried out and no
response data is sent.
•E When the CRC code of received data is H00, no CRC check is performed.
The response data is sent back with the calculated CRC code.

12-7. Function code for MOD-BUS (RTU) in inverter

The inverter is supported for the following eight codes.
Function code
DEC HEX
01 H01
02 H02
03 H03
04 H04
05 H05
06 H06
15 H0F
16 H10
•E There is no distinction between Coil (Discrete output) and Discrete input, nor between Input
register and Holding register.
Read Coils
Read Discrete Inputs
Read Holding Registers
Read Input Registers
Write Single Coil
Write Single Register
Write Multiple Coils
Write Multiple Registers
Name
Maximum
number
of read/write
32 coils
32 coils
32 registers
32 registers
1 coil
1 register
32 coils
32 registers
173