HRT-710 User Manual (Version 1.24, June/2015) PAGE: 85
Byte 6
:
uint8 Primary Variable Unit code
Byte 7~10
:
float Primary Variable
Byte 11
:
uint8 Secondary Variable Unit code
Byte 12~15
:
float Secondary Variable
Byte 16
:
uint8 Tertiary Variable Unit code
Byte 17~20
:
float Tertiary Variable
So the data of HART command 3 is parsed as below.
Response code1 = 0x00
Response code2 = 0x00
Primary Variable Current = 0x41 0xA1 0x01 0x22 (20.125553)
Primary Variable Unit code = 0x0C (kPA)
Primary Variable = 0x3E 0xC5 0xC5 0xB0 (0.386274)
Secondary Variable Unit code = 0x20 (degC)
Secondary Variable = 0x41 0xB6 0x78 0xC0 (22.808960)
Tertiary Variable Unit code = 0x39 (Percent)
Tertiary Variable = 0x42 0xC9 0x91 0xC5 (100.784706)
4th Variable Unit code = 0x00 ( ???)
4th Variable = 0x00 0x00 0x00 0x00 (0)
Q07 : How to know the connection status between HRT-710
and HART devices ?
A07: (2013/01/30)
The communication status description of HART command in HRT-710 is as below.
0
— No error
1
— Means the command has never be executed
2
— Receive timeout, can’t receive any HART data from HART device.
3
— Receive HART data is too short
4
— The delimiter of HART data has some error
5
— The address (the bit of master type) of HART data has some error
6
— The address (the bit of burst mode) of HART data has some error
7
— The command of HART data has some error
8
— The parity of HART data has error.
9
— The communication with HART slave device has some error and The error messages are recorded in the responses codes.
[ Ex1 => The Default CMD(3) of “Module 0” is Polling Mode ]
By using the Hi-Byte value of MB address 1000 (unit
:
WORD) (refer to sector 4.3
–
Modbus / HART Mapping Table), users can get the communication status of the Default
CMD(3) in ―Module 0‖.
Содержание HRT-710
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