YSI DIQ/S 182 XT-4-MOD - Manual (Page 124)

Modbus connection System 182 XT-4
7 - 8 ba76028e01 02/2012
7.4.3 Sensor data block
The data block contains the data of the sensors in the order of their
registering on the DIQ/S 182 XT-4-MOD (Sxx number).
The data of a sensor are stored in 8 registers each.
Thus, the sensor data block consists of altogether 16 registers. Each
register contains 2 bytes. The bytes 0 and 1 form register 0001, the
bytes 2 and 3 form register 0002, etc.
Modbus Information Data format
Register Bit Data type Bit
Sensor S01
0001 1-8 1 [= sensor number (S01)] (Int 8) 7-0
0001 9-16 Sensor status (Int 8) 7-0
0002 1-16 Sensor model (Int 16) 15-0
0003 1-16 Status info (Int 16) 15-0
0004 1-8 Measuring mode (Int 8) 7-0
0004 9-16 Measured value status (Int 8) 7-0
0005 1-16 Main measured value (IEEE-754 floating point, 32-bit) (Float 32) 31-16
0006 1-16 Main measured value (IEEE-754 floating point, 32-bit) (Float 32) 15-0
0007 1-16 Secondary meas. value (IEEE-754 floating point, 32-bit) (Float 32) 31-16
0008 1-16 Secondary meas. value (IEEE-754 floating point, 32-bit) (Float 32) 15-0
Sensor S02
0009 1-8 2 [= sensor number (S02)] (Int 8) 7-0
0009 9-16 Sensor status (Int 8) 7-0
0010 1-16 Sensor model (Int 16) 15-0
0011 1-16 Status info (Int 16) 15-0
0012 1-8 Measuring mode (Int 8) 7-0
0012 9-16 Measured value status (Int 8) 7-0
0013 1-16 Main measured value (IEEE-754 floating point, 32-bit) (Float 32) 31-16
0014 1-16 Main measured value (IEEE-754 floating point, 32-bit) (Float 32) 15-0
0015 1-16 Secondary meas. value (IEEE-754 floating point, 32-bit) (Float 32) 31-16
0016 1-16 Secondary meas. value (IEEE-754 floating point, 32-bit) (Float 32) 15-0