START
115200, baud rate, from 1200,2400 ~ 57600,115200
N, N=No Parity, E=EVEN, O=ODD
1, 1=one STOP bit, 2=two STOP bits
100, TimeOut for Modbus command, format=Dec, valid=[0 ~ 255], unit=0.01 sec, 0.01x100=1 sec, max=2.55 sec
0, delay in the end of Modbus command, format=Dec, valid=[0 ~ 255], unit=0.01 sec, max=2.55 sec
0, InTxPdoMax/2, format=Dec, valid=[0 ~ 128], default=0=Auto
0, OutRxPdoMax/2, format=Dec, valid=[0 ~ 128], default=0=Auto
0 0 0 0 0 0 0, 7 Reserved, format=Hex, default=0
2, three commands(00-01), max=300, format=Dec
04 0F 10 00 00 02 01 00, 1, 00, 00, D/O_0/1=OutTxPdo[1].bit0/bit1, update cyclically, (00)
04 01 10 00 00 02, 2E, 00, 00, InRxPdo[2E].bit0/bit1=D/O_0/1, update cyclically, (01)
STOP
==========================================================================
OutRxPdo[00]=CTL, OutRxPdo[01..7F]=Out[01..7F] 
InTxPdo[00]=SYS,  InTxPdo[01..7F]=In[01..7F] 
==========================================================================
8_bit commands

address of power_meter = 04