Modbus Server; Function Codes Supported By The Module - ProSoft Technology MVI69E-MBTCP User Manual

Reference
User Manual

7.2.2 Modbus Server

The MVI69E-MBTCP Modbus Server driver permits a remote client to interact
with all data contained in the module. This data can be derived from other
Modbus server devices on the network, through a client port, or from the
CompactLogix processor.
Service Port
Status Data

7.2.3 Function Codes Supported by the Module

The format of each command in the list depends on the Modbus Function Code
being executed. The following table lists the Function Codes supported by the
MVI69E-MBTCP module.
Function Code
1
2
3
4
5
6
8
15
16
17
22
23
Each command list record has the same general format. The first part of the
record contains the information relating to the communication module and the
second part contains information required to interface to the Modbus server
device.
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MBAP messaging on Service Port 502
Encapsulated messaging on Service Port 2000
Error codes, counters and port status available
Definition
Read Coil Status 0x
Read Input Status 1x
Read Holding Registers 4x
Read Input Registers 3x
Set Single Coil 0x
Single Register Write 4x
Diagnostics
Multiple Coil Write 0x
Multiple Register Write 4x
Report Server ID
Mask Write 4X
Read/Write
MVI69E-MBTCP ♦ CompactLogix Platform
Modbus TCP/IP Enhanced Communication Module
Supported as Client
X
X
X
X
X
X
X
X
Supported as Server
X
X
X
X
X
X
X
X
X
X
X
X
ProSoft Technology, Inc.
June 28, 2017