![Thermo 15i Instruction Manual Download Page 277](http://html.mh-extra.com/html/thermo/15i/15i_instruction-manual_1104215277.webp)
MODBUS Protocol
MODBUS Parameters Supported
Thermo Fisher Scientific
Model 15
i
Instruction Manual
C-9
Coil Number
Status
6 SPAN
MODE
7 SAMPLE
MODE
8 GEN
ALARM
9 CONC
MAX
ALARM
10 CONC
MIN
ALARM
11
INTERNAL TEMP ALARM
12 BENCH
TEMP
ALARM
13 PRESSURE
ALARM
14 SAMPLE
FLOW
ALARM
15 INTENSITY
ALARM
16 MOTOR
SPEED
ALARM
17 BIAS
VOLTAGE
ALARM
18 MB
STATUS
ALARM
19
INTERFACE BD STATUS ALARM
20
I/O EXP BD STATUS ALARM
21 CONC
ALARM
22 PURGE
MODE
23 NOT
USED
24 ZERO
CHECK/CAL
ALARM
25 SPAN
CHECK/CAL
ALARM
IMPORTANT NOTE
The addresses in the following tables are Protocol
Data Unit (PDU) addresses. Verify the register number on your
MODBUS master to ensure that it matches the register number on the
instrument.
▲
Note
For additional information on how to read registers and interpret the
data, refer to the “
(0x03/0x04) Read Holding Registers/Read Input
Registers
” section in this appendix.
▲
Table C–2.
Read Registers for 15
i
Register Number
Variable
0 INVALID
1 & 2
NOT USED
3 & 4
NOT USED