Siargo FS4001 - Digital Communication Descriptions; I 2 C Interface; I 2 C Interface Connection Diagram; I 2 C Interface Command Description

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www.Siargo.com FS4001 User Manual
5. Digital communication descriptions
5.1 I
2
C interface
5.1.1 I
2
C interface connection diagram
5.1.2 I
2
C interface command description
Command
Byte
(Hex)
Length
(int 16)
Command Name
Read/Write
Notes
05H
1
I
2
C address
Write
Bit 0 is R/W flag bit; Bit 1~ Bit 7 are
available.
oAH
1
Write the gas
correction factor
Write
Int16, the default value is 1000 for air
oBH
1
Filter depth
Write
Int 8, 0~254
oCH
2
Set response time
Write
Int16, unit is msec.
1CH
1
Flowrate offset
reset
Write
1 byte, ensure no-flow conditions
82H
12
Serial number
Read
ASCII
83H
4
Flow rate
Read
Int32(/1000 SLPM)+CRC
CRC=(Byte1)xOR(Byte2)x(OR(Byte3)XOR(byte4)
85H
1
I
2
C address
Read
Bit 7 ~ Bit 1
8AH
1
Read gas
correction factor
Read
Int16, the default value is 1000 for air
8BH
1
Filter depth
Read
Int 8, 0~254
8CH
2
Read response
time
Read
Int16, unit is msec.
Note: 1. The I
2
C address is set to Bit 7~Bit 1. E.g. if the I
2
C address is 1 (0000 001x), the write address will be
0x02 (0000 0010) and the read address will be 0x03 (0000 0011).