GE PanaFlow MV80, Руководство пользователя

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PanaFlow™ MV80 & MV82 User’s Manual 89
Chapter 4. Serial Communications
4.2.6f Register Definitions (cont.)
Table 9 below shows the registers that are available with the energy meter firmware.
Table 10 below shows the registers that contain the display units strings:
Function codes 03 (read holding registers) and 04 (read input registers) are the only codes supported for reading these
registers, and function codes for writing holding registers are not implemented. We recommend that the floating point
and long integer registers be read in a single operation with the number of registers being a multiple of two. If this data
is read in two separate operations, with each reading being a single 16-bit register, then the value will likely be invalid.
The floating point registers with values in display units are scaled to the same units currently displayed, but they are
instantaneous values that are not smoothed. If display smoothing is enabled (non-zero value entered in the Display TC
item in the Display Menu), then the register values will not agree exactly with the displayed values.
Table 9: Energy Firmware Registers
Registers Variable Data Type Units Function Code Addresses
30527-30528 Totalizer #2 unsigned long display units* 03, 04 526-527
32043-32048 Totalizer #2 units string -- 03, 04 2042-2047
30003-30004 Temperature #2 float display units* 03, 04 2-3
30011-30012 Energy flow float display units* 03, 04 10-11
Table 10: Display Unit Strings Registers
Registers Variable Data Type Units Function Code Addresses
32007-30012 Volume Flow units string -- 03, 04 2006-2011
32001-32006 Mass flow units string -- 03, 04 2000-2005
32025-32030 Temperature units string -- 03, 04 2024-2029
32019-32024 Pressure units string -- 03, 04 2018-2023
32031-32036 Density units string -- 03, 04 2030-2035
32013-32017 Energy flow units string -- 03, 04 2012-2017