Panametrics DigitalFlow XMT868i, Programming Manual

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Appendix C. Programming the XMT868i Using PanaView™
62 DigitalFlow™ XMT868i Programming Manual
C.6.0.13 Requesting Parameters Using MODBUS
To request specific parameters from the XMT868i using the MODBUS, the control system must access the appropriate
register number, as shown in Table 47. Only registers 1–84 are available with the XMT868i for MODBUS
communications. Registers 508–512 are used by the XMT868i to store the MODBUS parameters.
Table 47: MODBUS Register
MODBUS
Reg #
DPR Hex
Addr Description Units
Scaling
(decimal
places) Size in Bytes
1
1
Clear Totalizers
none -- 2 (16 bit signed)
2 CH1 Velocity ft/s or m/s 2 4 (32 bit integer)
4 CH1 Volumetric VOL_U -- 4 (IEEE 32 bit)
6 CH1 +Totals TOT_U Register 10 4 (32 bit integer)
8 CH1 -Totals TOT_U Register 10 4 (32 bit integer)
10 CH1 #T Digits none 0 2 (16 bit integer)
11 CH1 Totalizer Time sec 2 4 (32 bit integer)
13
2
CH1 Error Value
none 0 2 (16 bit integer)
14 CH 1 SSUP none 1 4 (32 bit integer)
16 CH 1 SSDN none 1 4 (32 bit integer)
18 CH 1 SNDSP ft/s or m/s 0 4 (32 bit integer)
20 CH 2 Velocity ft/s or m/s 2 4 (32 bit integer)
22 CH 2 Volumetric VOL_U -- 4 (IEEE 32 bit)
24 CH 2 +Totals TOT_U Register 28 4 (32 bit integer)
26 CH 2 -Totals TOT_U Register 28 4 (32 bit integer)
28 CH2 # T Digits none 0 2 (16 bit integer)
29 CH2 Totalizer Time sec 2 4 (32 bit integer)
31
2
CH2 Error Value
none 0 2 (16 bit integer)
32 CH 2 SSUP none 1 4 (32 bit integer)
34 CH 2 SSDN none 1 4 (32 bit integer)
36 CH 2 SNDSP ft/s or m/s 0 4 (32 bit integer)
38
3
AVG Velocity
ft/s or m/s 2 4 (32 bit integer)
40
3
AVG Volumetric
VOL_U -- 4 (IEEE 32 bit)
42
3
AVG+Totals
TOT_U Register 46 4 (32 bit integer)
MODBUS
Reg #
DPR Hex
Addr Description Units
Scaling
(decimal
places) Size in Bytes
44
3
AVG-Totals
TOT_U Register 46 4 (32 bit integer)
46 AVG #T Digits none 0 2 (16 bit integer)
47
3
AVG Totalizer Time
sec 2 4 (32 bit integer)
49
4
AVG Error Value
none 0 2 (16 bit integer)
50
3
AVG SSUP
none 1 4 (32 bit integer)
52
3
AVG SSDN
none 1 4 (32 bit integer)
54
3
AVG SNDSP
ft/s or m/s 0 4 (32 bit integer)
56 CH 1 Power Power_u -- 4 (IEEE 32 bit)