User manual for flow meter with pulse input SPI-94
Register Write
Range
Register description
A0h
2
Yes
0 ÷ 2
“
OUtmod
” parameter in “
OUtPUt
” menu (current output mode)
0
-
current output disabled
;
1
-
current output enabled
with 0
÷
20mA
mode;
2
-
current output enabled with 4÷20mA mode
;
3
-
current output controlled via RS-485 interface
A1h
2
A2h
2
Yes
0 ÷ 999999 “
OUt LO
” parameter in “
OUtPUt
” menu,
no decimal point included
A3h
2
A4h
2
Yes
0 ÷ 999999 “
OUt HI
” parameter in “
OUtPUt
” menu,
no decimal point included
A5h
2
Yes
0 ÷ 499
“
Lo r
” parameter in “
OUtPUt
” menu, expressed in 0,1%
A6h
2
Yes
0 ÷ 99
“
Hi r
” parameter in “
OUtPUt
” menu, expressed in 0,1%
A7h
2
Yes
0 ÷ 3
“
AL
” parameter in “
OUtPUt
” menu (current output value on critical
exception):
0
- no change;
1
- 22,1 mA;
2
- 3,4 mA;
3
- 0 mA
A8h
2
Yes
0 ÷ 1
“vALUE”
parameter in
“OUtPUt”
menu (kind of value controlled
active current output):
0
- “FLo”;
1
- “tot”;
A9h
2
Yes
0 ÷ 3
“t PrEc”
parameter in
“OUtPUt”
menu (precision of “
OUt LO
” and
“
OUt HI
” parameters displaying, while active current output is
controlled due to total flow counter value):
0
- “ 0”;
1
- “ 0.0”;
2
- “
0.00”;
3
- “0.000”
AAh
2
Yes
0 ÷ 1
“t unit”
parameter in
“OUtPUt”
menu (the unit of “
OUt LO
” and
“
OUt HI
” parameters displaying, while active current output is
controlled due to total flow counter value):
0
- lit.;
1
- m
3
;
1
- it is recommended to read these registers simultaneously – in 2-registers frames. If single registers are read, data
errors are possible because of changes of read value between successive registers readings.
2
- these registers are active only if device is equipped with active current output
3 - after writing to register no 20h the device responds witch an “old” address in the message.
4
- after writing to register no 22h the device responds with the new baud rate.
5
- the value of the “
mbAccE
” parameter is also connected to write to this register, so it is possible to block a writes,
but impossible to unblock writes via RS-485 interface, The unblocking of the writes is possible from menu level only.
9.2.
TRANSMISSION ERRORS DESCRIPTION
If an error occurs while write or read of single register, then the device sends an error
code according to Modbus RTU specifications (example message no 5).
Error codes:
01h
- illegal function (only functions 03h, 06h and 10h are available),
02h
- illegal register address
03h
- illegal data value
08h
- no write permission ( see: “
mbAccE
” parameter)
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