Baker Hughes DigitalFlow XGF868i, Руководство по программированию

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1.9.4 Requesting parameters using MODBUS
To request specific parameters from the XGF868i via the MODBUS, the control system must enter the appropriate register
number. Only registers 1 through 90 are available for MODBUS communications, while registers 508 through 512 are used by
the XGF868i to store the MODBUS parameters. For details, see Table 10 below.
Table 10: MODBUS registers for a 2-channel XGF868i
MODBUS
Reg #
DPR hex
addr
Description
Scaling
(decimal places)
Size in bytes
1 0 1”Clear Ch1 totalizers” -- 2 (16 bit signed)
2 2 1“Clear Ch2 totalizers” -- 2 (16 bit signed)
3 4 Ch1 velocity 2 4 (2 16-bit int)
5 8 Ch1 Act volumetric #Q DIGITS 4 (IEEE 32 bit)
7 C Ch1 Std volumetric #Q DIGITS 4 (IEEE 32 bit)
9 10 Ch1 Fwd totals #T DIGITS 4 (2 16 bit int)
11 14 Ch1 rev totals #T DIGITS 4 (2 16 bit int)
13 18 Ch1 #tot digits 0 2
14 1A Ch1 mass flow #M DIGITS 4 (IEEE 32 bit)
16 1E Ch1 Fwd mass totals #MT DIGITS 4 (2 16-bit int)
18 22 Ch1 rev mass totals #MT DIGITS 4 (2 16-bit int)
20 26 Ch1 #mass tot digits 0 2
21 28 Ch1 timer 2 4 (2 16-bit int)
23 2C Ch1 error code 0 2
24 2E Ch1 sound speed 3 4 (2 16-bit int)
26 32 Ch1 molecular weight 4 4 (2 16-bit int)
28 36 Ch1 sig strength upstream 1 4 (2 16-bit int)
30 3A Ch1 sig strength downstream 1 4 (2 16-bit int)
32 3E Ch1 temperature 2 4 (2 16-bit int)
34 42 Ch1 pressure 3 4 (2 16-bit int)
36 46 Ch2 velocity 2 4 (2 16-bit int)
38 4A Ch2 act volumetric #Q DIGITS 4 (IEEE 32 bit)
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