LS A2C-SG2-M12, Manual

Page: 29 / 44

A2C-SG2-M12
WWW.LILLIESYSTEMS.COM
29 of 44
12 Getting measurement values
The measurements from the amplifier can be sent in different formats, either as 24bit integers, 32bit integers or 32 bit
floating point.
There are currently 7 types of data available for each channel:

Current value

RMS value

Mean value

Minimum value

Maximum value

Sync value

Sync RMS value
All types are continuously available. The mean, minimum and maximum values are calculated since startup or since the command: "
Reset Global Minimum, Maximum and Mean values" is received - see section: 12.1.4.
12.1.1 Command: Get both
Send this command:
Command Sub Command Data[0] Data[1] Data[2] Data[3] Data[4] Data[5]
0x0A RET
DLC = 0x02 (values above 0x02 are also valid, but Data bytes are not used)
RET:
determines if current values or a previous synced value is used

0x00 = Get current values, which are continuously updated

0x01 = Get a previously synced value. Please see the Sync command in section

0x02 = Get the minimum values

0x03 = Get the maximum values

0x04 = Get the mean values

0x05 = Get the RMS values

0x06 = Get the previously synced RMS values

0x10
After the 0x0A and a sub command have been received, the sensor will return the measurements for both channels as two 24bit
signed integers. The RET value applies to both channels at the same time.
Reply:
Command Sub Command Data[0] Data[1] Data[2] Data[3] Data[4] Data[5]
0x0A Value sent is
returned Ch1 MSB Ch1 Ch1 LSB Ch2 MSB Ch2 Ch2 LSB
DLC = 0x08
12.1.2 Command: Get configurable channel measurements
Send this command:
Command Sub Command Data[0] Data[1] Data[2] Data[3] Data[4] Data[5]
0x0B Channel Return type Value type
DLC = 0x04
Channel:
is the channel number that is requested and must be one of the following values

0x00 = channel 1

0x01 = channel 2
Return type:
is the data type returned:

0x00 = signed int - 4 bytes

0x01 = float - 4 bytes
Value type: is the requested value and must be one of the following values

0x00 = current measurement

0x01 = synced measurement

0x02 = minimum value

0x03 = maximum value