SIMATIC S7-1200 Signal Boards plug directly into the CPU to supplement its integral I/O. The group includes digital versions such as SB 1221 (4 DI, 5 V or 24 V DC, 200 kHz), SB 1222 (4 DQ, 200 kHz) and SB 1223 (2 DI/2 DQ), along with the CB 1241 communication board and BB 1297 battery board.
Technical data
| Product | SB / CB / BB |
|---|---|
| Product family | SIMATIC S7-1200 |
| Description | Signal boards plugged into the CPU front to add I/O, communication or battery without extra panel space |
| Example version | Accessories SB 1221 signal board SIMATIC S7-1200, SB 1221 digital input module 4 DI, 5 V DC 200 kHz, sourcing input |
| Programming | STEP 7 (TIA Portal) |
Article numbers
| Version | Description | Article No. |
|---|---|---|
| Standard | SB 1221 signal board SIMATIC S7-1200, SB 1221 digital input module 4 DI, 5 V DC 200 kHz, sourcing input | 6ES7221-3AD30-0XB0 |
| Standard | SIMATIC S7-1200, SB 1221 digital input module 4 DI, 24 V DC 200 kHz, sourcing input | 6ES7221-3BD30-0XB0 |
| Standard | SB 1222 signal board SIMATIC S7-1200, SB 1222 digital output module 4 DQ, 5 V DC 200 kHz | 6ES7222-1AD30-0XB0 |
| Standard | SIMATIC S7-1200, SB 1222 digital output module 4 DQ, 24 V DC 200 kHz | 6ES7222-1BD30-0XB0 |
| Standard | SB 1223 signal board SIMATIC S7-1200, SB 1223 digital input/output module 2 DI/2 DO, 2 DI 24 V DC/2 DO 24 V DC | 6ES7223-0BD30-0XB0 |
| Standard | SIMATIC S7-1200, SB 1223 digital input/output module 2 DI/2 DQ, 5 V DC 200 kHz | 6ES7223-3AD30-0XB0 |
| Standard | SIMATIC S7-1200, SB 1223 digital input/output module 2 DI/2 DQ, 24 V DC 200 kHz | 6ES7223-3BD30-0XB0 |
| Standard | SB 1231 signal board SIMATIC S7-1200, analog input, SB 1231 1 AI, +/-10 V DC (12-bit resolution) or 0-20 mA | 6ES7231-4HA30-0XB0 |
| Standard | SIMATIC S7-1200, analog input, SB 1231 TC 1 AI type J or K thermocouples | 6ES7231-5QA30-0XB0 |
| Standard | SIMATIC S7-1200, analog input, SB 1231 RTD 1 AI RTD, PT 100 and PT1000 | 6ES7231-5PA30-0XB0 |
| Standard | SIMATIC S7-1200, analog output, SB 1232 1 AO, +/-10 V DC (12-bit resolution) or 0-20 mA (11-bit resolution) | 6ES7232-4HA30-0XB0 |
| Standard | SIMATIC S7-1200, CB 1241 communication board RS-485, terminal block, supports Freeport | 6ES7241-1CH30-1XB0 |
| Standard | SIMATIC S7-1200, BB 1297 battery board For long-term buffering of the real-time clock, pluggable in the signal board slot of the S7-12XX (from FW3.0); battery (CR1025) not included in scope of supply | 6ES7297-0AX30-0XA0 |
| SIPLUS | SIPLUS SB 1221 digital input signal board (Extended temperature range and exposure to environmental substances; cannot be used with 6AG1212-1....-2XB0) 4 inputs, 5 V DC, 200 kHz, sourcing | 6AG1221-3AD30-5XB0 |
| SIPLUS | 4 inputs, 24 V DC, 200 kHz, sourcing | 6AG1221-3BD30-5XB0 |
| SIPLUS | SIPLUS SB 1222 digital output signal board (Extended temperature range and exposure to environmental substances; cannot be used with 6AG1212-1....-2XB0) 4 outputs, 5 V DC, 0.1 A, 200 kHz | 6AG1222-1AD30-5XB0 |
| SIPLUS | 4 outputs, 24 V DC, 0.1 A, 200 kHz | 6AG1222-1BD30-5XB0 |
| SIPLUS | SIPLUS SB 1223 digital input/output signal board (Extended temperature range and exposure to environmental substances; cannot be used with 6AG1212-1....-2XB0) 2 inputs, 24 V DC, IEC type 1 sinking input; 2 x 24 V DC transistor outputs, 0.5 A, 5 W; can be used as HSC at up to 30 kHz • For areas with exceptional exposure to environmental substances (conformal coating) | 6AG1223-0BD30-4XB0 |
| SIPLUS | • Ambient temperature -25 ... +55 °C | 6AG1223-0BD30-5XB0 |
| SIPLUS | 2 inputs, 5 V DC, 200 kHz 2 outputs 5 V DC, 0.1 A, 200 kHz | 6AG1223-3AD30-5XB0 |
| SIPLUS | 2 inputs, 24 V DC, 200 kHz 2 outputs 24 V DC, 0.1 A, 200 kHz | 6AG1223-3BD30-5XB0 |
| SIPLUS | SIPLUS SB 1232 analog output signal board (Extended temperature range and exposure to environmental substances; cannot be used with 6AG1212-1....-2XB0) Range of ambient temperature -25 ... +55 °C 1 analog output, ±10 V with 12 bits or 0 ... 20 mA with 11 bits | 6AG1232-4HA30-5XB0 |
| SIPLUS | Range of ambient temperature 0 ... +55 °C 1 analog output, ±10 V with 12 bits or 0 ... 20 mA with 11 bits | 6AG1232-4HA30-4XB0 |
| SIPLUS | SIPLUS CB 1241 RS 485 communication board (Extended temperature range and exposure to environmental substances; cannot be used with 6AG1212-1....-2XB0) For point-to-point connection, with 1 RS485 interface | 6AG1241-1CH30-5XB1 |
| SIPLUS | SIPLUS SB 1231 RTD signal board | 6AG1231-5PA30-5XB0 |
Technical data and article numbers are based on Siemens catalog ST 70 · 2026 (chapter SIMATIC S7-1200) and are for information only. Image is representative.
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Tags: SB / CB / BB, siemens s7-1200, simatic plc, sb / cb / bb, 6ES7221-3AD30-0XB0, 6ES7221-3BD30-0XB0, 6ES7222-1AD30-0XB0, 6ES7222-1BD30-0XB0, 6ES7223-0BD30-0XB0, 6ES7223-3AD30-0XB0, 6ES7223-3BD30-0XB0, 6ES7231-4HA30-0XB0, 6ES7231-5QA30-0XB0, 6ES7231-5PA30-0XB0, 6ES7232-4HA30-0XB0, 6ES7241-1CH30-1XB0, 6ES7297-0AX30-0XA0, 6AG1221-3AD30-5XB0, 6AG1221-3BD30-5XB0, 6AG1222-1AD30-5XB0, 6AG1222-1BD30-5XB0, 6AG1223-0BD30-4XB0, 6AG1223-0BD30-5XB0, 6AG1223-3AD30-5XB0, 6AG1223-3BD30-5XB0, 6AG1232-4HA30-5XB0, 6AG1232-4HA30-4XB0, 6AG1241-1CH30-5XB1, 6AG1231-5PA30-5XB0