Modbus Rtu Communication; Rs485 Communication Interface; Communication Parameters; Modbus Holding Registers - Evikon PluraSens E2638 Series User Manual

E2638-ETO

Modbus RTU Communication

RS485 communication interface

Databits: 8
Parity: none / odd / even
Stop bits: 1 or 2
Protocol: Modbus RTU

Communication parameters

Parameter
Supported baud rates 1200, 2400, 4800, 9600, 19200, 38400, 57600
Data bits
Parity
Stop bits
Protocol
Modbus functions
Error codes

Modbus holding registers

Register addresses are shown 0-based, Address in hexadecimal, Reg in decimal format.
Modbus holding register numbers MHR are shown in the decimal 1-based format and may
be addressed either from 00001 or 40001 base.
Address Reg / MHR RW Description
0x0001 1 / 40002
0x0002 2 / 40003
0x0003 3 / 40004
0x0004 4 / 40005 RW Slave ID (net address) *
Permitted values
8
none / odd / even
1, 2
Modbus RTU
03 - Read multiple registers
06 - Write a single register
01 – Illegal function
02 – Illegal data address
03 – Illegal data value
04 – Slave device failure
(details of last error 04 can be read from register 0x0008)
R Hardware version
R Software version
R Product serial number
Supported Modbus functions:
03 – Read multiple registers
06 – Write a single register
Supported values (dec)
1...65535
1...247 **
15
Rev 10.03.2021
Default
9600
8
none
1
Default
-
-
-
1