Siemens 6SN1118-0DM11-0AA0 SIMODRIVE 611 Card

The Siemens 6SN1118-0DM11-0AA0 is a communication and control interface card for the SIMODRIVE 611 drive system. It is used to connect the drive unit to a higher‑level controller via PROFIBUS DP, enabling the exchange of setpoints, actual values, and control words. This card is designed for feed drives (servo) and can handle speed control (with additional encoder evaluation) or position control when combined with a SIMODRIVE 611 control board (CUD1).

Technical Specifications

The card is a plug‑in module that fits into the “option slot” of a SIMODRIVE 611 power module or into a dedicated SIMODRIVE 611 control unit. It provides a 9‑pin D‑sub female connector for PROFIBUS DP. Supported baud rates: 9.6 kbit/s to 12 Mbit/s. The card supports DP‑V0 cyclic data exchange with up to 32 bytes input and 32 bytes output. It also supports DP‑V1 (acyclic) for parameter access. Power is supplied via the backplane (24 V DC, 0.2 A). Dimensions: approx. 80 mm x 50 mm. Operating temperature 0‑50°C. The card includes LED indicators for bus status (BF, SF, DX).

Key Features

• PROFIBUS DP slave interface (DP‑V0 and DP‑V1)

• Galvanically isolated bus connection

• Supports cyclic data: speed setpoint, torque limit, actual speed, actual current

• Parameterization via GSD file (Siemens_611U_DP_Vxxx)

• Diagnostic messages to master

• Compatible with SIMODRIVE 611 universal (U) and 611A drives

Function and Integration

The 6SN1118-0DM11-0AA0 acts as a PROFIBUS slave. The master (e.g., Siemens S7‑300, SINUMERIK 840D) sends a 2‑word telegram containing a speed setpoint (e.g., 0‑32767 representing 0‑±100% speed) and control bits (enable, fault reset). The card forwards these signals to the drive’s internal control board (CUD1). Similarly, the actual speed, current, and status bits are sent back to the master. Configuration is done using the GSD file in the master’s hardware configurator. The card’s node address is set via two rotary switches on the card.

Installation

Insert the card into the option slot of a SIMODRIVE 611 power module (e.g., 6SN1123‑1AA00‑0AA1) or into a standalone control unit (e.g., 6SN1118‑0DM11‑0AA0 itself is an option card). Ensure the card is properly seated and secured with the retaining screws. Connect the PROFIBUS cable to the D‑sub connector using a standard PROFIBUS connector with terminator if this is the last device on the bus. Set the node address (1‑125) using the two rotary switches (tens and units). After power‑up, the green LED should flash; if the bus communication is active, the LED remains steady.

Parameterization

On the drive side (using SimoCom U or DriveMonitor), set parameter P918 (PROFIBUS address) to match the switches. Define the telegram type (PPO type) depending on the required data width. Standard PPO 2 (4 words input + 2 words output) is common. The card also supports PROFIsafe if combined with a safety option, but that is not standard on this model.

Applications

This card is used in multi‑axis CNC machines and general automation where SIMODRIVE 611 drives are controlled via PROFIBUS. It eliminates analog setpoint wiring and provides digital accuracy and diagnostics.

Troubleshooting

LED codes: BF (bus fault) red: no communication (check address, cable, termination). SF (system fault) red: drive error. DX (data exchange) green: cyclic data is active. If BF is on, verify that the master is configured and that the bus terminator is installed correctly. The card also sends diagnostic data (e.g., “parameter error”) that can be read by the master.

Standards and Compliance

The card is CE, UL, and RoHS compliant. It meets PROFIBUS certification guidelines (PNO).

Conclusion

The Siemens 6SN1118-0DM11-0AA0 PROFIBUS card provides a digital gateway to SIMODRIVE 611 drives, enabling seamless integration into modern PLC‑based automation networks while preserving the performance of the drive system.