User manual - RATEMETER STI-94
11.1.
LIST OF REGISTERS
Some parameters are located on two registers (higher word in first register, and lower word in
next one). After writing of one of them device controls result of their 32-bit value, and if it is
necessary corrects value of second register automatically. If appropriate modification is
impossible, both registers stay unaffected and device responds with error code 03h
(see:
TRANSMISSION ERRORS DESCRIPTION
).
Register Write
Range
Register description
01h
1
02h
1
No
0 ÷ 999999
Measurement value (no decimal point)
03h
No
0-FFh
The status of the current measurement.
0
– data valid;
20h
– device waits for first pulse;
A0h
– alarm state, allowable frequency range is exceeded
04h
Yes
0 ÷ 5
“PrEc”
parameter in
“inPUt”
menu. The same as 12h register
05h
Yes
0 ÷ 31
State of the relays and alarm LED (binary format)
(1 - on, 0 - off):
00000000 000edcba
a
- relay R1;
b
- relay R2;
c
- relay R3;
d
- relay R4;
e
- alarm state
indicator; If written, only
a
,
b
,
c
,
d
bits are important (others are
ignored) these bits allows user to control the relays via RS-485
interface
06h
2
Yes
0h ÷ 1800h
State of active current output, expressed in 1/256 mA units – it
means that high byte express integer part, and low byte fractional
part of desired output current.
Yes
2CCh÷1800h
State of passive current output, expressed in 1/256 mA units – it
means that high byte express integer part, and low byte fractional
part of desired output current.
Yes
0h ÷ 1600h
State of active voltage output, expressed in 1/512 V units – it means
that high byte express integer part, and low byte fractional part of
desired output voltage.
07h
1
08h
1
No
0 ÷ 999999
Peak (drop) value (no decimal point)
10h
Yes
0 ÷ 11
“FrEq”
parameter
in
“inPUt”
menu (input filter):
0
- 10Hz;
1
- 15Hz;
2
- 20Hz;
3
- 30Hz;
4
- 40Hz;
5
- 50Hz;
6
- 100Hz;
7
- 300Hz;
8
- 1kHz;
9
- 3kHz;
10
- 10kHz;
11
- 50kHz
11h
Yes
0 ÷ 19999
“PULSEn”
parameter
in
“inPUt”
menu. Value 0 is interpreted as 1
12h
Yes
0 ÷ 5
“PrEc”
parameter
in
“inPUt”
menu
0
- “ 0”;
1
- “ 0.0”;
2
- “ 0.00”;
3
- “0.000”;
4
- “0.0000”;
5
- “0.00000”;
13h
Yes
0 ÷ 2
“unit”
parameter
in
“inPUt”
menu
0
-rev./sec.;
1
- rev./min;
2
- rev./hour.;
14h
15h
Yes
0 ÷ 999999
“mUL”
parameter
in
“inPUt”
menu
Value 0 is interpreted as 1 000 000
40
