Siemens

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The Siemens drivers in Ignition support basic connections to S7 devices. Ignition connects to these PLCs via TCP/IP using the S7 protocol. The available S7 device drivers are listed below by the module providing them:

Siemens S7 Symbolic Driver Module

• Siemens Driver: Connects to S7-300, S7-400, S7-1200, and S7-1500 devices. Supports browsing, symbolic access, and access to optimized data blocks when connected to S7-1200 and S7-1500 devices.

Siemens Drivers Module

• Siemens S7-300 Driver (Legacy): Connects to S7-300 PLCs, supports absolute addressing only.
• Siemens S7-400 Driver (Legacy): Connects to S7-400 PLCs, supports absolute addressing only.
• Siemens S7-1200 Driver (Legacy): Connects to S7-1200 PLCs, supports absolute addressing only.
• Siemens S7-1500 Driver (Legacy): Connects to S7-1500 PLCs, supports absolute addressing only.

Deciding what driver is best for your system depends on a few factors, like your operating system and hardware. For instance, the Siemens Driver is not supported on Mac or ARM. Therefore, the following drivers will be installed by default based on the operating system.

• Windows: Siemens Driver
• macOS: S7-300 Driver (Legacy), S7-400 Driver (Legacy), S7-1200 Driver (Legacy), and S7-1500 Driver (Legacy)
• ARM: S7-300 Driver (Legacy), S7-400 Driver (Legacy), S7-1200 Driver (Legacy), and S7-1500 Driver (Legacy)

On Upgrade

Users with existing 8.1 individual S7 driver connections will not be automatically upgraded to the Siemens Driver when upgrading to 8.3. Instead, the connections configurations will remain the same with the only change being an added Legacy label on the Gateway.

Considerations for 1200 and 1500 Devices

The requirements listed below apply when connecting to the S7-1200 and S7-1500 types, through either the Siemens Driver or the Siemens Legacy Driver options:

1. Only global DBs can be accessed.

2. Reading and writing is not supported for timer (TM) and counter (CT) areas.

3. The Optimized block access attribute option must be turned off.

   

4. When configuring the Protection & Security settings, make sure the Full access (no protection) and Permit access with PUT/GET communication options are selected.

   

   note

   This change may require the hardware configuration to be recompiled and downloaded. Additionally, disabling "optimized access" for the data block(s) you are attempting to read may also improve the reliability of tag reads.

Additionally, some S7-1200 and S7-1500 devices have an onboard OPC UA server that can be enabled to connect over the OPC UA server instead of using the Siemens driver. OPC UA allows you to browse tags, while the legacy drivers require you to address each tag manually.

Refer to the Siemens Driver and Siemens Legacy Drivers pages for more information on driver addressing and connection. The Siemens Legacy Drivers page covers addressing and connection settings for the S7-300, S7-400, S7-1200, and S7-1500 drivers.