Fn04 Read Input Register (Modbus / TCP) |
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| Name | Fn04_ReadInputRegister: Fn04 Read Input Register (Modbus / TCP) |
| Basic Function | Request for Read One Input Register | ||
| Symbol |  |
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| Originates from | Tsunagi Lab Europe | ||
| Created by | OEE-HQ HvB (creation and testing) | ||
| File Name | Fn04_ReadInputRegister.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 |
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| Function Description | Fn04_ReadInputRegister Function Block read one Input Register conform the address variable and Outputs the result in the data variable Output. | ||
| 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. |
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| FB Precautions |
Omron can not be held responsible in case of malfunction. |
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| EN input condition | • Connect EN to condition for the FB to Work • Fn04 send the Request for Read the Input Address • Socket Number 1 to 3 • Register Address |
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| 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 Fn04 bit is OFF. Except for the Data Output. |
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| Application example | Fn04_ReadInputRegister 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 Example:
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| Related manuals | CP1L-EM/EL CPU Unit Manual (W516-E1) | ||
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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 |
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| Read Input Register | Fn04 | BOOL | Start request for Read Input Register | ||
| Socket Number | SocketNo | UNIT | &1 to &3 | &1 to &3 | |
| Address | Address | WORD | Register address to read |
Output Variables
| Name | Variable name | Data type | Range | Description |
|---|---|---|---|---|
| ENO | ENO | BOOL | 1 (ON): FB operating normally 0 (OFF): FB not operating normally |
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| 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 |
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| Data | Data | WORD | Contents of register |
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.
