S7 Configuration (Siemens)

The S7 Configuration tab allows you to connect your Kodeno equipment to a Siemens S7 controller to read variables.

Optional Module

This feature requires the "S7 Connector" module to be enabled in equipment settings.

What is S7 Connection?

S7 connection allows your Kodeno equipment to:

• Connect to a Siemens S7-300, S7-400, S7-1200, or S7-1500 controller
• Read variables from data blocks (DB)
• Display values in real-time in Kodeno

Accessing S7 Configuration

1. Access your equipment page
2. Click on the "S7 Configuration" tab

Prerequisites

Make sure the S7 module is enabled in the Settings tab before accessing this configuration.

Connection Settings

Network Information

Field	Description
IP Address	Siemens controller IP address
Rack	Rack number (usually 0)
Slot	CPU slot number (usually 1 or 2)

Connection Test

1. Enter connection settings
2. Click on "Test connection"
3. A message indicates if connection is successful

Configure Variables

Add a Variable

1. Click on "Add variable"
2. Fill in information:

Field	Description
Name	Variable identifier
DB Number	Data block number
Offset	Position in DB (in bytes)
Data Type	BOOL, INT, REAL, DINT, etc.
Bit	Bit position (for BOOL type)

Supported Data Types

Type	Description	Size
BOOL	Boolean (true/false)	1 bit
BYTE	Unsigned byte	1 byte
INT	Signed integer	2 bytes
DINT	Double signed integer	4 bytes
REAL	Floating point number	4 bytes
STRING	Character string	Variable

Configuration Example

To read temperature stored in DB10 at offset 4 in REAL format:

• Name: Oven temperature
• DB Number: 10
• Offset: 4
• Type: REAL

Manage Variables

Modify a Variable

1. Click on the pencil icon next to the variable
2. Modify settings
3. Save

Delete a Variable

1. Click on the trash icon next to the variable
2. Confirm deletion

Reorganize Variables

Use drag-and-drop to reorganize the display order of variables.

Synchronize with Equipment

After configuring your variables:

1. Click on "Synchronize"
2. Configuration is sent to equipment
3. Reading starts automatically

View Values

S7 variable values are visible:

• In the S7 Log tab for detailed display
• On the dashboard (if configured)
• In analysis charts (if history enabled)

Troubleshooting

Connection fails

Check:

• Controller IP address
• Rack and slot are correct
• Controller allows external connections (S7 security settings)
• Firewall doesn't block port 102

Values are incorrect

Check:

• DB number is correct
• Offset matches variable position
• Data type is correct

Variables not read

Check:

• S7 module is enabled in settings
• Equipment is online
• Synchronization was performed

Tip

Use TIA Portal or Step 7 software to verify exact addresses of your variables in the Siemens controller.