File: UT-5601
Copyright © - OBL Metering pumps - All rights reserved
34
3. Read Holding Registers (FC=03) ERROR
a. Request
▪
This command is requesting the content of analog output holding registers 40100
(register out of range) from the slave device with address
▪
01 03 9CA3 0001 5A78
b. Response
▪
01 83 02 C0F1
01
:
The Slave Address (01 hex)
83
:
The Function Code (Preset Multiple Registers) with 1 to MSB
02
:
error code (
illegal data address)
C0F1
:
The CRC (cyclic redundancy check) for error checking.
MODBUS LIST
The list of the registers and parameters that the user can write/read using Modbus is described in
the following table:
Table 10 Modbus list
Nr.
Reg.
PAR.
TYPE
MOTOR
OFF
TYPE
MOTOR
ON
BYTE Min
value
Max
value
Default U.M.
Description
40001 M_TIME_S
W/R
R
2
1
120
60
s
Calibration time - calibration
settings
40002 M_FLOW
W/R
R
2
1
9999
600
(L/h
or
Gal/h)*10
Max flowrate - pump capacity
settings
40003 M_PERC
W/R
R
2
1
100
50
%
Adjustment % - pump capacity
settings
40004 M_L_PULSE
W/R
R
2
1
2000
200
L/p
or
p/L
L/pulse o pulse/L
40005
W/R
R
2
0
5
1
Languages
Value 0= Italian
Value 1=English
Value 2=Spanish
Value 3=Dutch
Value 4=Russian
Value 5=French
40006 M_FDATE
W/R
R
2
0
2
0
Date Format
Value 0=DD/MM/YY
Value 1=MM/DD/YY
Value 2=YY/MM/DD
40007 M_24H
W/R
R
2
0
1
0
Time Format
Value 0=24h
Value 1=12 h
40008 M_UNIT_LH
W/R
R
2
0
1
0
Unit of measure
Value 0=L/h
Value 1=Gal/h
40009 M_YES_NO
W/R
R
2
0
1
1
Proximity red alarm
Value 0=No
Value 1=Yes
