Siemens 6ES7223-3BD30-0XB0 SIMATIC S7-1200 SB 1223 2DI/2DQ 200kHz PLC I/O Module

The Siemens 6ES7223-3BD30-0XB0 SB 1223 is a SIMATIC S7-1200 signal board adding 2 digital inputs and 2 solid-state digital outputs rated 0.1 A, with both inputs and outputs capable of 200 kHz high-speed counting and pulse functions. It mounts directly onto the CPU front, drawing 35 mA typical from the backplane bus and adding just 0.5 W of power loss.

Technical Specifications

Certifications & Standards

• CE
• CSA
• UL
• cULus
• FM
• RCM
• KC
• Marine

Selection Notes

The 200 kHz input/output speed makes this signal board suitable for high-speed counting or pulse-train applications that the CPU's standard onboard I/O cannot handle at full rate, so it is the right pick when the application needs a fast encoder input or PTO-class pulse output without consuming a communication module slot. Outputs are MOSFET solid-state rated only 0.1 A, so they suit logic-level and small-relay-coil signaling rather than direct contactor or lamp switching; for higher-current loads, an SM 1222 relay output module is the better choice. Because it plugs into the CPU's dedicated signal board slot rather than the backplane bus, it adds I/O without using one of the CPU's communication module or signal module slots.

Applications

High-speed pulse counting or PTO/PWM output expansion on compact S7-1200 CPUs where panel space rules out a full-size digital I/O module.