Modbus Interface; Overview; Read And Write Permissions; Data Types - Bender LINETRAXX SmartDetect RCMS410 Manual

6

Modbus interface

6.1

Overview

Description of the Modbus registers for RCMS41x devices. The following Modbus function codes
are supported:
• Holding register for reading out values
(Read Holding Register; function code 0x03)
• Register for device programming
(Write Multiple Registers; function code 0x10)
For a complete Modbus-protocol specification, visit http://www.modbus.org.
6.2

Read and write permissions

RO Read Only ( read access only)
RW Read/Write (read and write access)
WO Write Only (write access only)
6.3

Data types

Float IEEE754 32-bit (single precision floating point number)
INT16 Signed 16-bit integer
INT32 Signed 32-bit integer
UINT8 Unsigned 8-bit integer
UINT16 Unsigned 16-bit integer
UINT32 Unsigned 32-bit integer
String UTF8 ASCII character string
6.4

Register areas

Range
Info
Alarm and measuring values
Monitoring functions
Status information
Harmonic analysis
Modbus RTU parameters
Input "I"
Input/output "Q"
Output "M+"
Start address End address
0 998
999 1999
2000 2999
3000 3999
4000 4500
32000 32099
32300 32399
32400 32499
32500 32599
LINETRAXX® SmartDetect RCMS410
4 bytes
2 bytes
4 bytes
1 byte (shown as 2 bytes)
2 bytes
4 bytes
Range
Response values
Function/response behaviour
Alarm behaviour
Time response
Monitoring functions
Measuring-current trans-
former
Device error codes
Control commands
Function-control commands
RCMS410_D00424_00_M_XXEN / 09.2022
Start address End address
32600 32699
32700 32799
32800 32899
32900 32999
33000 33010
33100 33110
58000 58999
59000 59010
60000 60003
33