AND Check Weighing Indicator AD-4404, Инструкция по эксплуатации

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9.3. 9.3. 9.3. 9.3. Modbus Interface for RS Modbus Interface for RS Modbus Interface for RS Modbus Interface for RS----485 485 485 485
Modbus is a kind of connection that is used with the RS-485 serial interface.
It is not necessary to make a program for communication between these units.
The communication uses the following memories of the monitor unit or computer.
Data is specified with reference No. and address No.
Refer to the instruction for Modbus of the monitor unit or computer.
The connection for Modbus is as follows.
Monitor example: Monitouch V6 (checked at 2002)
Set the following parameters of RS-485 interface. Refer to " 11. Function List"
Function and parameter Description
r5 f-1 Output data
Select either parameter.
r5 f-2
6
Communication mode
MODBUS
Set MODBUS
r5 f-3
Baud rate
r5 f-4
Parity check
r5 f-5
Character length
r5 f-6
Stop bits
r5 f-7
Terminator
Select either parameter.
r5 f-8
Address Set unique address number
Reference No.
Type Reference No. Description
Coil 0 The same as input bits of control I/O
Input status 1 The same as output bits of control I/O
Input register 3 Register to read data
Holding register 4 Register to read and write data
4.500kg
4 6 5
7 9 8
1 3 2
0 E C
START START START START
STOP
STOP STOP
STOP
1000
kg
2000
kg
Connection is 31 units in maximum
600
kg
400
kg
Monitor unit or computer
Connection of RS-485 interface
30.075kg
2.250kg
1.320kg
2.700kg
30.000kg
OK