User's Guide

13
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5.3.6 The GPIO is configured for minimal power consumption during power down mode.
5.3.7 Entering power down mode is executed from main loop after the timeout timer, timer
2 has elapsed.
5.4 Backward compatibility message
Message from meter:
Byte Num
(0:3)
(4:7)
0
'S'
1
ID [0]-0x30
ID [1]-0x30
2
ID [2]-0x30
ID [3]-0x30
3
ID[4]-0x30
ID [5]-0x30
4
ID[6]-0x30
ID [7]-0x30
5
Acc[0]-0x30
Acc [1]-0x30
6
Acc [2]-0x30
Acc [3]-0x30
7
Acc [4]-0x30
Acc [5]-0x30
8
Acc [6]-0x30
Acc [7]-0x30
9
Check sum for(i=1;i<9;a^= message[i++]);
10
0x0D
5.5 Encoder interface configuration
Byte Num
1
Bits:
0 - Enable External Power
1 - 0 Fix format
1 Variable format
Default is 0
No external power and Variable
format
2
TPOR
In 10 ms steps
3
2W clock freq
In Khz
4-5
Vsense threshold
Switch to external power when
Vsense exceeds threshold
6
2W pulse width in 5*us
0 means 0us
10 means 50us
100 means 500us
7-8
Battery Access threshold
In thousands of accesses.
TBD
9
Decimal point location
10
Num of digits
0-8
11
Manufacturer Id
12
Volume Unit
See Appendix A
13
Flow Unit
See Appendix A
14-15
Bitwise:
0 - send Alarm
1 - send Unit
2 -send flow
3 -send volume
16
Flow Type
C
17
Volume Type
B
18-30
Meter ID Main
Forward (8 LSB in Fix mode)
31-42
Meter ID (secondary)
Backward Flow (8 LSB in Fix
mode)