IC-PMX Datasheet, PDF (24/27 Pages) IC-Haus GmbH – ENERGY HARVESTING MULTITURN COUNTER/ENCODER

iC-PMX
ENERGY HARVESTING MULTITURN COUNTER/ENCODER
Rev A3, Page 24/27
Data in Gas Gauge Mode
The gas gauge mode uses two counters. The amount of gas flowing forward is summed in VOLFW and the
amount of gas flowing backward is summed in VOLBW.
Position Data in Gas Gauge Mode
Addr
Bit 7
Bit 6
Bit 5
0x00
0x01
0x02
0x03
0x04
0x05
CRC1(3:0)
0x06
0x07
CRC2(3:0)
0x08
0x09
0x0A
0x0B
0x0C
CRC3(3:0)
REFERENCE VALUES FOR GAS METER
0x0D
0x0E
0x0F
—
Bit 4
Bit 3
VOLFW(7:0)
VOLFW(15:8)
VOLFW(23:16)
VOLFW(31:24)
VOLFW(39:32)
IOFF(7:0)
LPP
VOLBW(7:0)
VOLBW(15:8)
VOLBW(23:16)
VOLBW(31:24)
IPSCM(7:0)
IPSCM(15:8)
INVALID
C3
Bit 2
Bit 1
VOLFW(43:40)
LMP
—
VOLBW(35:32)
C2
C1
Bit 0
—
C0
Table 21: Position Data in Gas Gauge Mode (pin C1=1)
Register Map, Overview
LMP:
polarity of the last magnet polarity
(1=positive, 0 = negative)
LPP:
polarity of last Wiegand pulse
(1=positive, 0 = negative)
VOLFW: gas volume in forward direction
VOLBW: gas volume in backward direction
IOFF:
offset correction for increment value in
gas meter mode (typ. value 0)
IPSCM:
conversion factor into Standard Cubic
Meter
CRC1:
CRC for address 0x0 to 0x5
CRC2:
CRC for address 0x6 to 0x7
CRC3:
CRC for address 0x8 to 0xC
INVALID:
error information (position data changed
during read access, please discard the
data and read it again)
C3, C2, C1, C0:
Value of the Pins C3-C0, sampled during
the last wiegand pulse processing