Schneider Electric STBNDP2212 Standard Network Interface Module

Configured for Profibus DP fieldbus communication and distributed I/O data exchange, the Schneider Electric STBNDP2212 (STBNDP2212 Standard Network Interface Module) provides direct physical/electrical execution within the Modicon STB distributed I/O architecture.

Hardware Specifications

Parameter	Specification
Model	STBNDP2212
Brand	Schneider Electric
Product Type	Standard Network Interface Module
Series	Modicon STB Distributed I/O
Origin	France
Weight	177 g (package weight)
Dimensions	128.3 mm width x 70 mm depth x 40 mm height
Operating Temp	0 to 60 deg C without derating; -25 to 70 deg C with derating factor
Power Consumption	24 VDC supply, 430 mA supply circuit
Fieldbus Interface	Profibus DP DIN 19245 Part 1 and 3
Transmission Rate	Up to 12 Mbit/s
Communication Interface	9-way female RS485 SUB-D, RS232 service ports
Network Structure	Industrial fieldbus DP V.0
Maximum Slaves	125 server devices
Island Configuration	1 primary segment, maximum 6 extension segments
Addressable I/O Modules	0 to 32 per island
Logic Bus Output Voltage	5.25 VDC +/- 0.21%
Logic Bus Output Current	1.2 A maximum
Protection Rating	IP20
Power Supply Type	SELV
Certifications	CE, CSA, ATEX Category 3G, FM Class 1 Division 2, UL

Profinet / EtherNet/IP Deterministic Network and I/O Density Scaling

The STBNDP2212 operates as the Profibus DP communication interface between the Modicon STB island and the fieldbus master. The module manages DP slave I/O data read/write operations, diagnostic services, configuration control, and slave parameter handling through the Profibus communication layer.

The distributed I/O architecture supports scalable island construction with up to 32 addressable I/O modules per island. The interface module provides local bus power conversion, generating the 5.25 VDC logic supply for connected STB modules. LED indicators provide status information for bus fault, island operation, power supply, module error, and test mode conditions.

Frequently Asked Questions

Q: What communication services are supported by the STBNDP2212?
A: The module supports Profibus DP diagnostics, DP slave I/O data read/write operations, configuration control, and slave configuration services.

Q: What is the power input and logic bus output configuration of this module?
A: The module receives a 24 VDC SELV supply and provides a 5.25 VDC logic bus output for the connected Modicon STB island modules.

Q: How is the STBNDP2212 installed in an automation cabinet?
A: The module is installed as part of a Modicon STB island assembly with DIN rail mounting and connected through the STB modular backplane system.

Field Installation Guidelines

Install the STBNDP2212 on a compatible 35 mm DIN rail assembly with the associated Modicon STB I/O modules connected according to the island configuration requirements.

Use shielded twisted-pair wiring for the Profibus DP RS485 connection. Connect the cable shield according to the plant grounding practice to reduce electromagnetic interference on the fieldbus segment.

Verify the 24 VDC SELV supply polarity before energizing the module. Check the BUSFLT, RUN, PWR, ERR, and test mode LED indicators after startup to confirm communication and module operating status.

Maintain separation between Profibus communication cables and high-current power wiring to reduce electrical noise coupling.

---