Coronis WaveTherm DALLAS, Руководство пользователя

Страница: 35 / 65

File : CS-SUP-MUTI-WTHERMAPP-E01.sxw
 Contents of request REQ_SEND_FRAME
Data Field (max : 152 bytes)
Applicative Command Precision level
1 byte 1 byte
0x01 (*)
(*) The precision field is used only for the modules :
- WaveTherm – PT100
- WaveTherm – PT1000
The WaveTherm – DALLAS doesn't support the precision capability. In this case the precision field
doesn't exist (size = 0 byte).
Thus, the format of the reponse varies according to the module used :
➢ WaveTherm – DALLAS :
 Contents of the response RECEIVED_FRAME
Data Field (max : 152 bytes)
Acknowledgement
of the Applicative
Command
Operating
Mode
Application
Status
MSB
Temperature
A
LSB
Temperature
A
MSB
Temperature
B
LSB
Temperature
B
1 byte 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte
0x81 (*) (*) (*) (*)
(*) These fields are set only if the sensors are wired, and initialized, otherwise the returned value is 0x4FFF.
The format of the temperature is described in chapters 5.1.1 and 5.2.
➢ WaveTherm – PT100 and WaveTherm – PT1000 :
 Contents of the response RECEIVED_FRAME
Data Field (max : 152 bytes)
Acknowledgement
of the Applicative
Command
Operating
Mode
Application
Status
Temperature A
(Float 32 bits
LSB First)
Temperature B
(Float 32 bits
LSB First)
1 byte 1 byte 1 byte 4 bytes 4 bytes
0x81 (*)
(*) These fields are set only if the sensors are wired, otherwise the returned value is 0xFFFFFFFF.
WaveTherm modules – application handbook page 35 of 65