ICP DAS USA ICP CON GW-7557 User Manual page 76

Byte 6~9: float Primary Variable Percentage of Range
Command 3: Read Dynamic Variables and P.V. Current
Request data bytes: none
Response data bytes: 2+24 = 26
Index format description
Byte 0: uint8 Response code 1
Byte 1: uint8 Response code 2
Byte 2~5: float Primary Variable Current
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
Byte 21: uint8 4th Variable Unit code
Byte 22~25: float 4th Variable
Command 6: Write Polling Address
Request data bytes: 1
Index format description
Byte 0: uint8 Polling Address
Response data bytes: 2+1 = 3
Index format description
Byte 0: uint8 Response code 1
Byte 1: uint8 Response code 2
Byte 2: uint8 Polling Address
Command 11: Read Unique Identifier Associated with TAG
Request data bytes: 6
Index format description
Byte 0~5: PA6 TAG Name
Response data bytes: 2+12 = 14
Index format description
Byte 0: uint8 Response code 1
Byte 1: uint8 Response code 2
Byte 2: uint8 254
Byte 3: uint8 Manufacturer ID
GW-7557 PROFIBUS/HART Gateway User Manual (Version 1.00, Dec/2011) PAGE: 76