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CP1L-EL/EM: Fn06 Write Register(Modbus/TCP) Function Block


Introduction

This article provides details for the use and application of the Fn06 Write Register (Modbus/TCP) function block. Using this function block with the CP1L-E provides an easy means to write a value to a Modbus register.

This function block can be of particular use in PLC-based motion control applications often found in packaging machinery. To see a machine case study of a packaging application that uses Modbus and PLC-based motion control, visit the link below.

industrial.omron.eu/converging_solutions

 

 

Fn06 Write Register (Modbus / TCP)
Name
Fn06_WriteRegister: Fn06 Write Register (Modbus / TCP)
 
Basic Function
Request for Write One Register
Symbol
 
Originates from
Tsunagi Lab Europe
Created by
OEE-HQ HvB (creation and testing)
File Name
Fn06_WriteRegister.cxf
Applicable models
CPU Unit
CP1L-EL or CP1L-EM
CX-Programmer
Version 9.40 or higher
Conditions for usage
The following specifications can be used for FB Auto Allocation:
- CIO 0000 to 6143
- HR H000 to H511
- AR A448 to A959
- D00000 to D09999 for the CP1L-EL
- D00000 to D32767 for the CP1L-EM
Function Description
Fn06_WriteRegister Function Block writes one Register conform the variable value input.
Kind of FB definition
Connect Always ON type
  Connect the EN input to the Always ON Flag (P_ON)
  The same instance cannot be used in two or more places
FB Precautions
Omron can not be held responsible in case of malfunction
EN input condition
• Connect EN to condition for the FB to Work
• Fn06 send the Request for Write the value
• Socket Number 1 to 3
• Register Address
• Value
Restrictions
  Input variables
• Socket Number 1 to 3
  Output variables
• This FB requires multiple cycles to process.
• The status of the Outputs bits are Reset if the Fn06 bit is OFF.
Application example
Fn06 Write Register Function Block is designed for use with the other Function Blocks. For more more details on the use of this function block see also CP1L-EL/EM Modbus TCP Client Socket Services.
The Socket Number Output can be used for the Socket Number Input used by :

- Open_Socket
- Fn03_ReadRegister
- Fn04_ReadInputRegister
- Fn05_ForceSingleCoil
- Close_Socket

Example:
Related manuals
CP1L-EM/EL CPU Unit Manual (W516-E1)
  • Variable Table 
Input Variables
Name
Variable name
Data type
Default
Range
Description
EN
EN
BOOL
 
 
1 (ON): Starts FB
0 (OFF): Does not start FB
Write Register
Fn06
BOOL
 
 
Start request for Write Register
Socket Number
SocketNo
UNIT
 
&1 to &3
&1 to &3
Address
Address
WORD
 
 
Register Address to write
Value
Value
WORD
 
 
Value
Output Variables
Name
Variable name
Data type
Range
Description
ENO (may be omitted)
ENO
BOOL
 
1 (ON): FB operating normally
0 (OFF): FB not operating normally
Done
Done
BOOL
 
Done
Error
Error
BOOL
 
Error
Error ID
ErrorID
UNIT
 
Error code:
TCP/UDP Error Codes
Ethernet Units Construction of Networks Operation Manual (W420)
7-3 Command/Response Reference FINS Error Codes Communications Commands Reference Manual (W342)
5-1-3 Error Codes CP1L-EL/EM CPU Unit Operation Manual (W516) 12-1 Troubleshooting
Revision History
Version
Date
Contents
1.00
21-Apr-2012
Original production
Note
This manual is a reference that explains the function block functions. It does not explain the operational limitations of Units, components, or combinations of Units and components. Always read and understand the Operation Manuals for the system’s Units and other components before using them.
 



Attachments

Fn06_WriteRegister.pdf - Size: 163858
Fn06_WriteRegister.cxf - Size: 7149


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Created 2012-04-17
Modified 2014-03-13
Views 7701

 

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