Masibus LC5296 User Manual

Model: LC5296-H / LC5296 / 5006-RN / 408-M / LC5248E
Doc. Ref. no.:- m61C/om/101
Issue no. 13
User’s Manual Page 30 of 36
10. COMMUNICATION PROTOCOL–MODBUS RTU
(Applicable only for LC5296, LC5296-H, 5006-RN, LC5248E)
10.1 Introduction
The unit can be connected in RS-485 communication data link either in multi drop or
repeat mode. Each unit must have unique Serial Number. Entire range of addresses
(1 to 247) may be used. Before starting any communication, choose a baud rate
compatible to the host computer. The serial protocol used is MODBUS RTU.
Function Code for Modbus
CODE
NAME
Function
01
Read coil status
Use to read Relay and Digital output status
03
Read Holding registers
Use to read PV, Control, RSP output etc
04
Read input registers
Use to read programmable registers
06
Preset Single register
Use to write programmable register
The error checking field contains a 16-bit value implemented as two eight-bit bytes. The error check value is the
result of a Cyclical Redundancy Check (CRC) calculation performed on the message contents.
10.2 Parameter Address Details
Sr.
No.
Parameters
Absolute
Address
Type
Access
Type
LC5296
5006-RN
LC5296-H
1
PROCESS VALUE
30001
Int
Read
Only


NOTE: Process Value (PV) Error Conditions Value
OPEN : 32767
UNDER : 32765
OVER : 32766
Sr.
No.
Parameters
Absolute
Address
Type
Access
Type
LC5296
5006-RN
LC5296-H
1
Input Type
40001
Int
R + W


2
Zero
40002
Int
R + W


3
Span
40003
Int
R + W


4
SET Type-1
40004
Int
R + W


5
SET Type-2
40005
Int
R + W


6
Open Sensor Status
40006
Int
R + W


7
Decimal Point
40007
Int
R + W


8
Display set point
40008
Int
R + W


9
Brightness
40009
Int
R + W


10
Serial Number
40010
Int
R + W


11
Baud Rate
40011
Int
R + W


12
Relay Delay -1
40012
Int
R + W


13
Relay Delay -2
40013
Int
R + W


14
Retransmission o/p Type -1
40014
Int
R + W


15
Retransmission o/p Type -2
40015
NA
NA



Masibus LC5296 Specifications

General

Brand	Masibus
Model	LC5296
Category	Controller
Language	English