GW-7557 PROFIBUS/HART Gateway User Manual
(Version 1.00, Dec/2011)
PAGE: 79
Index format description
Byte 0~5: PA6 TAG Name
Byte 6~17: PA12 Descriptor
Byte 18: uint8 Day of month
Byte 19: uint8 Month of year
Byte 20: uint8 Year as offset to 1900
Response data bytes: 2+21 = 23
Index format description
Byte 0: uint8 Response code 1
Byte 1: uint8 Response code 2
Byte 2~7: PA6 TAG Name
Byte 8~19: PA12 Descriptor
Byte 20: uint8 Day of month
Byte 21: uint8 Month of year
Byte 22: uint8 Year as offset to 1900
Command 19: Write Final Assembly Number
Request data bytes: 3
Index format description
Byte 0~2: uint24 Final assembly number (MSB first)
Response data bytes: 2+3 = 5
Index format description
Byte 0: uint8 Response code 1
Byte 1: uint8 Response code 2
Byte 2~4: uint24 Final assembly number (MSB first)
Note:
Uint8: 8-bit unsigned integer
Uint24: 24-bit unsigned integer
Float: IEEE 754 format
PA6: Packed-ASCII 6 octets = 8 characters
PA12: Packed-ASCII 12 octets = 16 characters
PA24: Packed-ASCII 24 octets = 32 characters
