4 I/O scanning to Drive Profile Lexium | Schneider Electric LXM32M

3 Basics	LXM32M

3.3.4I/O scanning to "Drive Profile Lexium"

I/O scanning is used for cyclic interchange of data between master and slave.

I/O scanning must be configured on the master. The master can use 2 different approaches for of I/O scanning:

•"Function Code" 23 (17h), Read-Write Mulitple Registers

•"Function Code" 3 (03h), Read Multiple Registers and "Function Code" 16 (10h), Write Multiple Registers

NOTE: The read value is 0 until the first write command is execu- ted.

Settings The following setting must be made on the master before you can use

I/O scanning:

•The "Unit Identifier" is 255.

•The Modbus parameter address is 0.

•The data length is 13.

In addition, you can use up to 3 mappable parameters. If these parameters are used, the data length changes to 15, 17 or 19.

The Modbus addresses for I/O scanning do not differ from the addresses for normal Modbus access.

Output - Input Output and input refer to the direction of data transmission from the perspective of the master.

•Output: Commands from the master to the slave

•Input: Status messages from the slave to the master

0198441113843, V1.01, 01.2012

22	Modbus-TCP module

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Contents

LXM32M Important information Table of contents Diagnostics and troubleshooting Accessories and spare parts LXM32M About this manual Further reading Introduction Fieldbus products on the network LXM32M Qualification of personnel Before you begin safety informationIntended use Hazard categories Basic information Standards and terminology Function principle BasicsModbus TCP technology Bus topology Network service Snmp Client / server model Modbus TCP protocol Structure of a Modbus message Mbap header Field Length Description Modbus TCP communication Connection management Modbus response to a Modbus request Excep Name Description Tion Code Reading and writing parameters Address Value 4 I/O scanning to Drive Profile Lexium 4.1 I/O scanning Output Byte Meaning Data type Parameter address 4.2 I/O scanning Input Bit Meaning Bit Signal Factory setting Inputs Parameter channel Ctrl Subindex Index Function Code 3 Read Multiple Registers Modbus services Function CodeField Bytes Value Meaning Function Code 8 Diagnostics Sub-function Code Diagnostics function Function Code 16 Write Multiple Registers Function Code 23 ReadWrite Multiple Registers Function Code 43 Encapsulated Interface Transport Object ID Object name Value Examples Example of Function Code LXM32M Installation of the module InstallationDescription Order no Electrical installation Pin Signal Meaning Commissioning Commissioning the device First Setup Switching on the device Power stage supply is switched off Manual / MAnu Manual Bootp / boot BootpManual assignment of the network address Dhcp / dhcP Dhcp IP address Ethernet module, byte Assignment of the network address via Bootp Assignment of the network address via Dhcp Setting the transmission rate Setting the protocol Setting the gateway Set the IP address of the gateway with the parameters Master with Word Swap Setting the master for I/O scanning Setting I/O-ScanningActivating I/O scanning Setting the mapping for I/O scanning PLC Setting the web server Setting communication monitoring for I/O scanning 0198441113843, V1.01 Operation Indication of the operating state Operating statesBit Name Meaning Changing the operating state Bit Name Meaning Operating state Operating modes Indicating and monitoring the operating modeBit Name Description Starting and changing an operating mode Bit Name Description Overview of operating modes MODE+ACTION Operating mode Jog Operating mode Electronic Gear Operating mode Profile Torque 24 h Operating mode Profile Velocity 23 h Operating mode Profile Position Operating mode Homing Operating mode Motion Sequence LXM32M6 Operation Extended settings Web server Main menu Submenu Content User interface Accessing the FTP server FTP server FDR service Fast Device Replacement LXM32M Diagnostics and troubleshooting Fieldbus communication error diagnostics Status LEDs Color Status Meaning Color Meaning for EtherNet/IP Meaning for Modbus TCP Error indication Excep Name Description Tion Code LXM32M Accessories and spare parts Cables LXM32M Glossary Units and conversion tables Torque TemperatureRotation Moment of inertia Terms and Abbreviations LXM32M Index LXM32M