APPENDICES
58
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.1
APPENDIX C:
MODBUS REGISTER MAP
OI-6000 MODBUS REGISTER MAP
Register
Address
(Hex)
Register
Address
(Dec)
Data Description
R/W Length
Unit
Valid Response(s)
1
1
Gas Reading
R
2
FLOAT Numerical Gas Reading
3
3
Modbus Address
R
1
UINT
0 – 247
4
4
Gas Type
R
1
ENUM 0 – 26, see below
5
5
Unit Type
R
1
ENUM 0 – 1, see below
6
6
Major Revision
R
1
UINT
0 – 100
7
7
Minor Revision
R
1
UINT
0 – 9
8
8
Mode of Sensor
R
1
ENUM 0 – 7, see below
9
9
Voltage Reading
R
2
FLOAT 12V – 35V
B
11
Fault Code
R
1
ENUM 0 – 6, see below
C
12
Sensor Type
R
1
ENUM 0-4, see below
E
†
14
†
Relay 1 Setting
R
2
FLOAT 1 – 32000
10
†
16
†
Relay 2 Setting
R
2
FLOAT 1 – 32000
16
22
Precision
R
1
INT
0 – 3
17
†
23
†
Relay Setting
R
1
BFLD
See Relay Setting Table
18
24
Days Since Last Null
R
1
UINT
0 – 60000
(>60000) Default to “Never”
19
25
Calibration Type
R
1
ENUM 0 – 1
1A
26
Auto-Calibration Value
R
2
FLOAT Numerical Gas Reading
1C
28
Days Since Last Calibration
R
1
UINT
0-60000
(>60000) Default to “Never”
1E
30
Relay 1 State
R
1
INT
0 – Relay Inactive
1 – Relay Active
1F
31
Relay 2 State
R
1
INT
0 – Relay Inactive
1 – Relay Active
20
32
Relay 1 Reset
R/W
1
INT
Read as 0
Write 1 to reset Relay 1 state
21
33
Relay 2 Reset
R/W
1
INT
Read as 0
Write 1 to reset Relay 2 state
Register Address 1: Hexadecimal numbers
Register Address 2: Decimal numbers
R/W: Read/Write capable data
R: Read-only data
FLOAT: Floating point number
ENUM: Enumeration
UINT: Unsigned integer
INT: Integer
BFLD: Bit Field
(*): Limited by precision
(
†
): Relays are equivalent to the Alarm LEDS on OI-6000-X-X-S
Summary of Contents for GEN II OI-6000
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Page 28: ...INSTALLATION AND STARTUP 22 OI 6000 X X X X O OPS_GUIDE_REV 3 1...
