XTC601 User’s Manual
Michell Instruments
51
APPENDIX D
Appendix D
Modbus Register Map (standard version)
Compatible with XTC601 Firmware Version: V1:08
Addr
Function
Access
Ranges/Resolution
Type
0
Modbus Instrument Address (ID)
R/W
1–127
A
1
Settings Register
R/W
0–65535
B
2
Display Contrast / Brightness
R/W
0–100% / 0–100%, 10% steps
C
3
Units Register
(Tempr, Pressure, Ext Sens, Param, etc)
R/W
See reg details
D
4
Chart Interval
R/W
2–60 sec, in 2 sec intervals
A
5
Background gas in application
R/W
0–23
A
6
Alarm 1 (Lo alarm) Set point
R/W
Instrum range min
Instrum range max, 0.01
G
7
Alarm 2 (Hi alarm) Set point
R/W
Instrum range min
Instrum range max, 0.01
G
8
Range Zero (Ch1 output zero)
R
0.00 to Range Span
G
9
Range Span (Ch1 output span)
R
Range Zero to 100.00
G
10
CH1 comp coefficient 20%
R/W
0.50–2.00
G
11
CH1 comp coefficient 40%
R/W
0.50–2.00
G
12
CH1 comp coefficient 60%
R/W
0.50–2.00
G
13
CH1 comp coefficient 80%
R/W
0.50–2.00
G
14
CH1 comp coefficient 100%
R/W
0.50–2.00
G
20
CH2 Input (Ext Sensor) zero
R/W
See reg details
F
21
CH2 Input (Ext Sensor) span
R/W
See reg details
F
22
Main gas in application
R/W
0–23
A
23
Cell Tempr Set point
R
40–70 C
A
27
Alarm / NAMUR Configuration
R/W
See reg details
L
29
Field Cal Reference 1
R/W
Instrument range (min -20%) to
(max +20%), 0.01
G
30
Field Cal Actual 1
R/W
-199.99–199.99
G
31
Field Cal Reference 2
R/W
Instrument range min to (max
+20%), 0.01
G
34
Language
R/W
0–15
A
37
Field Cal Actual 2
R/W
-199.99–199.99
G
56
CH2 output zero
R/W
Instrument range min to CH2
output span, 0.01
G
57
CH2 output span
R/W
CH2 output zero to instrument
range max, 0.01
G
63
Hours Of Operation
R
0–65535
A
64
Restore Factory Settings / Cal data
(write 5491 to this reg)
W
5491
A
65
Set Clock HRS
W
00–23
J
66
Set Clock MIN
W
00–59
J
67
Set Clock DAY
W
01–31
J
68
Set Clock MONTH
W
01–12
J
69
Set Clock YEAR
W
00–99
J
70
% Reading of Gas
R
-199.00–199.99%
G
72
Cell Temperature
R
-99.9–99.9 or equiv in F or K
F
73
PCB temperature
R
-99–99 C or equiv in F or K
K
75
mA1 Input in % (comp signal)
R
0.0–100.0%
F