Siemens IO-Link Benefits

IO-Link from Siemens ensures highest precision and profitability in any production. IO-Link is completely integrated into Totally Integrated Automation (TIA) and has a number of benefits.

Open standard

With IO-Link, switching devices and sensors are connected to the control level with a cost-efficient point-to-point-connection. Leading suppliers of automation products developed the communication standard. The IO-Link organization supports the new concept in all areas of control, sensor and actuator technology. IO-Link is an open interface and can be integrated into all common fieldbus and automation systems.

Consistent wiring

The use of IO-Link reduces the wiring effort for actuators and sensors and simplifies the storage. The use of the consistent IO-Link interface reduces the variety of interfaces of sensors and IO-periphery. It also reduces the amount of different connection wires. Multiple cables can be replaced with unshielded standard cables M12, M8, or M5. Thanks to IO-Link, wiring and installation become less complex.

Simplifying motor starter wiring

Control panel builders know motor starters need lots of connections. The main power wires are only a start. In addition, starters need at least five more wires: two to energize the coil, and three more to monitor the auxiliary contact and overload. They all need to come back to the I/O rack at the PLC or other controller. If it’s a reversing starter, add at least one more. IO-Link offers a better way. When the master is installed, it has four ports. The motor starter needs a small, inexpensive IO-Link module, but once it is installed, it can be connected to the master with only the normal three-conductor cable. That alone is already an advantage – three wires instead of five or more!

Efficient engineering

The IO-Link standard and the SIMATIC S7-PCT-Tool enable the synchronous parameterization "with a single click."
SIMATIC S7-PCT together with  STEP 7, is the efficient and comfortable engineering tool for project design, parameterization and testing of IO-Link masters and devices. All available IO-Link components from Siemens are already implemented in the selection menu, and other IO-Link devices can be integrated with a description file (IODD).

Fast diagnosis

Diagnosis data cannot be transmitted when an actuator or sensor fails that does not have an IO-Link connection. The HMI does not show a diagnosis notification and the reason for the failure can only be seen at the device. IO-link sensors and actuators help make reliable diagnosis. Diagnosis notifications can be transmitted and displayed at the HMI together with their explanation. This enables a fast and reliable diagnosis as well as short reaction times and minimized downtime.

Automatic parameterization

Without the use of IO-Link, each parameter has to be assigned with a programming device in case actuators and sensors have to be replaced due to a fault. When IO-Link sensors and actuators are used, for instance in the RFID system RF200, the parameters are assigned automatically after the exchange of devices. This reduces the parameterization effort and avoids errors.

A high degree of process transparency

The acquisition of energy data and energy management is not possible without the use of IO-Link. IO-Link monitoring and overload relays make the transmission of energy data, easily. The data can be acquired and displayed on the HMI. This means that IO-Link enables energy management down to the last meter to the process.