GE DigitalFlow XGS868i, Programming Manual

Page: 136 / 176

Appendix C. Programming the XGS868i Using PanaView™
126 DigitalFlow™ XGS868i Programming Manual
C.6.3b Requesting Parameters Using MODBUS
To request specific parameters from the XGS868i via the MODBUS, the control system must access the appropriate
register number, as shown in Table 31. Only registers 1–84 are available with the XGS868i for MODBUS
communications. Registers 508–512 are used by the XGS868i to store the MODBUS parameters.
:
Table 31: MODBUS Registers
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)