Holding Registers - Honeywell TWM 9000 Supplementary Instructions Manual

MODBUS PROTOCOL
6

6.8 Holding registers

Some parameters of the device can be accessed as Modbus holding registers.
Function code 03 (0x03) for "Read" operations and function code 16 (0x10) for "Write" operations.
The holding registers are grouped into the following different sections.
6.8.1 Counter parameters
INFORMATION!
Counter 3 parameters are only available for converter with IO 2.
Modbus protocol Description and settings
address
40000 counter 1 function counter 1 function
counter 1 function counter 1 function
1 = sum counter
2 = + counter
3 = - counter
0 = off
40001 measurement counter 1 measurement counter 1 measurement counter 1 measurement counter 1
21 = volume flow
22 = mass flow
40002 counter 2 function counter 2 function counter 2 function counter 2 function
1 = sum counter
2 = + counter
3 = - counter
0 = off
40003 measurement counter 2 measurement counter 2
measurement counter 2 measurement counter 2
21 = volume flow
22 = mass flow
40004 counter 3 function counter 3 function
counter 3 function counter 3 function
1 = sum counter
2 = + counter
3 = - counter
0 = off
40005 measurement counter 3 measurement counter 3 measurement counter 3 measurement counter 3
21 = volume flow
22 = mass flow
41000
low flow cutoff value counter 1 [m low flow cutoff value counter 1
low flow cutoff value counter 1 low flow cutoff value counter 1
or [kg/s]
41002 time constant counter 1 [s] time constant counter 1 time constant counter 1 time constant counter 1
41004
set counter 1 or read counter 1 [m set counter 1 or read counter 1
set counter 1 or read counter 1 set counter 1 or read counter 1
41006
low flow cutoff value counter 2 low flow cutoff value counter 2 [m low flow cutoff value counter 2 low flow cutoff value counter 2
or [kg/s]
41008 time constant counter 2 [s] time constant counter 2 time constant counter 2 time constant counter 2
41010
set counter 2 or read counter 2 [m set counter 2 or read counter 2
set counter 2 or read counter 2 set counter 2 or read counter 2
41012
low flow cutoff value counter 3 [m low flow cutoff value counter 3 low flow cutoff value counter 3 low flow cutoff value counter 3
or [kg/s]
41014 time constant counter 3 [s] time constant counter 3
time constant counter 3 time constant counter 3
41016
set counter 3 or read counter 3 [m set counter 3 or read counter 3 set counter 3 or read counter 3 set counter 3 or read counter 3
18
Converter Fct.
No.
C3.1.1
C3.1.2
C3.2.1
C3.2.2
C3.3.1
C3.3.2
3 C3.1.3
/s]
C3.1.4
C3.1.7
3
] or [kg]
3 C3.2.3
/s]
C3.2.4
C3.2.7
3
] or [kg]
C3.3.3
3
/s]
C3.3.4
3 C3.3.7
] or [kg]
www.honeywell.com/ps
TWM 9000
Type Number of
registers
byte 1
word 1
byte 1
word 1
byte 1
word 1
float 2
float 2
float 2
float 2
float 2
float 2
float 2
float 2
float 2
34-VF-25-22 iss.1 GLO Nov 09 US