ICPDAS HRT-310, Руководство пользователя

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127 Reserved
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128 Transmitters-Specific
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253 Transmitters-Specific
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254 Reserved
255 Reserved
About the often used HART command, please refer to “Appendix A: HART command”.
3.3.5 Byte Count
It is the number of bytes between it and the check byte the end of the HART frame.
3.3.6 Response Codes
It includes two bytes of status. These bytes convey three types of information:
Communication errors, Command response problems and Field device status. They are
shown as below.
[ First Byte ]
bit 7: 1 (communication error)
bit 6: Parity error
bit 5: Overrun error
bit 4: Framing error
bit 3: Checksum error
bit 2: 0(reserved)
bit 1: Rx buffer overflow
bit 0: Overflow (undefined)
[ bit 7=0 (Comm. OK) ; Bit 0~6: as an integer, not bit-mapped ]
0: No command-specific error
1: (undefined)
2: Invalid selection
3: Passed parameter too large
4: Passed parameter too small
5: Too few data bytes received
6: Device-specific command error (rarely used)
HRT-710 / HRT-310 User Manual Version 1.31 Page
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