User's Manual

USER MANUAL 1.34
© 2013 EnOcean | www.enocean.com STM 300 / STM 300C / STM 300U User Manual | Page 18/42
STM 300 / STM 300C / STM 300U
3.9 Radio telegram
3.9.1 Normal operation
Telegram content seen at programming interface of STM 300x or at DOLPHIN API:
ORG = 0x07 (Telegram type “4BS”)
Data_Byte1..3
3x8bit mode:
DATA_BYTE3 = Value of AD_2 analog input
DATA_BYTE2 = Value of AD_1 analog input
DATA_BYTE1 = Value of AD_0 analog input
1x8bit, 1x6it, 1x10bit mode:
DATA_BYTE3 = Value of AD_2
DATA_BYTE2 = Upper 2 bits of AD_0 and value of AD_1
DATA_BYTE1 = Lower 8 bits Value of AD_0 analog input
DATA_BYTE0 = Digital sensor inputs as follows:
Bit 7 Bit 0
Reserved, set to 0
DI_3
DI_2
DI_1
DI_0
ID_BYTE3 = module identifier (Byte3)
ID_BYTE2 = module identifier (Byte2)
ID_BYTE1 = module identifier (Byte1)
ID_BYTE0 = module identifier (Byte0)
DATA_BYTE3
DATA_BYTE2
DATA_BYTE1
AD_2
AD_1
AD_0
7
6
5
4
3
2
1
0
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1
0
The voltages measured at the analog inputs can be calculated from these values as follows:
U=(Value of AD_x)/(2
n
)x1.8 V n=resolution of channel in bit