• Siemens SIPLUS S7-1200 digital signal modules (SM 1221, 1222, 1223)
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Siemens SIPLUS S7-1200 digital signal modules (SM 1221, 1222, 1223)

Siemens SIPLUS S7-1200 digital signal modules (SM 1221, 1222, 1223)

SIPLUS extreme digital input, output and I/O signal modules for S7-1200 in harsh environments.

Key features

  • Based on SIMATIC SM 1221/1222/1223 standard modules
  • Versions for exceptional exposure to environmental substances (conformal coating)
  • Extended temperature versions up to +70 °C
  • Above +60 °C max. 50 % of I/O simultaneously active
  • Transistor and relay output versions

Specifications

Brand Siemens
Product line SIPLUS
Series SIPLUS S7-1200
Module type Digital signal module
Based on SIMATIC SM 1221/1222/1223
Derating Max. 50 % I/O active above +60 °C
Accessories As SIMATIC standard modules
Source Siemens Catalog ST 70 · 2026, p. 190-211
6AG1221-1BF32-4XB0 Module: SM 1221 | I/O: 8 DI 24 V DC | Version: Conformal coating
6AG1221-1BF32-2XB0 Module: SM 1221 | I/O: 8 DI 24 V DC | Version: -25 ... +70 °C
6AG1221-1BH32-4XB0 Module: SM 1221 | I/O: 16 DI 24 V DC | Version: Conformal coating
6AG1221-1BH32-2XB0 Module: SM 1221 | I/O: 16 DI 24 V DC | Version: -25 ... +70 °C
6AG1222-1BF32-4XB0 Module: SM 1222 | I/O: 8 DQ 24 V DC 0.5 A | Version: Conformal coating
6AG1222-1BF32-2XB0 Module: SM 1222 | I/O: 8 DQ 24 V DC 0.5 A | Version: -25 ... +70 °C
6AG1222-1BH32-4XB0 Module: SM 1222 | I/O: 16 DQ 24 V DC 0.5 A | Version: Conformal coating
6AG1222-1BH32-2XB0 Module: SM 1222 | I/O: 16 DQ 24 V DC 0.5 A | Version: -25 ... +70 °C
6AG1222-1HF32-4XB0 Module: SM 1222 | I/O: 8 DQ relay 2 A | Version: Conformal coating
6AG1222-1HF32-2XB0 Module: SM 1222 | I/O: 8 DQ relay 2 A | Version: -25 ... +70 °C
6AG1222-1XF32-4XB0 Module: SM 1222 | I/O: 8 DQ relay changeover 2 A | Version: Conformal coating
6AG1222-1XF32-2XB0 Module: SM 1222 | I/O: 8 DQ relay changeover 2 A | Version: -40 ... +70 °C
6AG1222-1HH32-4XB0 Module: SM 1222 | I/O: 16 DQ relay 2 A | Version: Conformal coating
6AG1222-1HH32-2XB0 Module: SM 1222 | I/O: 16 DQ relay 2 A | Version: -25 ... +70 °C
6AG1223-1BH32-4XB0 Module: SM 1223 | I/O: 8 DI / 8 DQ transistor | Version: Conformal coating
6AG1223-1BH32-2XB0 Module: SM 1223 | I/O: 8 DI / 8 DQ transistor | Version: -25 ... +70 °C
6AG1223-1BL32-4XB0 Module: SM 1223 | I/O: 16 DI / 16 DQ transistor | Version: Conformal coating
6AG1223-1BL32-2XB0 Module: SM 1223 | I/O: 16 DI / 16 DQ transistor | Version: -25 ... +70 °C
6AG1223-1PH32-4XB0 Module: SM 1223 | I/O: 8 DI / 8 DQ relay | Version: Conformal coating
6AG1223-1PH32-2XB0 Module: SM 1223 | I/O: 8 DI / 8 DQ relay | Version: -25 ... +70 °C
6AG1223-1PL32-4XB0 Module: SM 1223 | I/O: 16 DI / 16 DQ relay | Version: Conformal coating
6AG1223-1PL32-2XB0 Module: SM 1223 | I/O: 16 DI / 16 DQ relay | Version: -25 ... +70 °C
6AG1223-1QH32-4XB0 Module: SM 1223 | I/O: 8 DI 120/230 V AC / 8 DQ relay | Version: Conformal coating
6AG1223-1QH32-2XB0 Module: SM 1223 | I/O: 8 DI 120/230 V AC / 8 DQ relay | Version: -40 ... +70 °C
PLC I/O ModulesSiemens
24 product codes available in this family
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Siemens SIPLUS S7-1200 digital signal modules (SM 1221, 1222, 1223)

Brand Siemens·PLC I/O Modules

Available part numbers (24)

6AG1221-1BF32-4XB0, 6AG1221-1BF32-2XB0, 6AG1221-1BH32-4XB0, 6AG1221-1BH32-2XB0, 6AG1222-1BF32-4XB0, 6AG1222-1BF32-2XB0, 6AG1222-1BH32-4XB0, 6AG1222-1BH32-2XB0, 6AG1222-1HF32-4XB0, 6AG1222-1HF32-2XB0 + 14 more — see full table ↓

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Product codes & specifications
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Product codeSpec
6AG1221-1BF32-4XB0Module: SM 1221 | I/O: 8 DI 24 V DC | Version: Conformal coating
6AG1221-1BF32-2XB0Module: SM 1221 | I/O: 8 DI 24 V DC | Version: -25 ... +70 °C
6AG1221-1BH32-4XB0Module: SM 1221 | I/O: 16 DI 24 V DC | Version: Conformal coating
6AG1221-1BH32-2XB0Module: SM 1221 | I/O: 16 DI 24 V DC | Version: -25 ... +70 °C
6AG1222-1BF32-4XB0Module: SM 1222 | I/O: 8 DQ 24 V DC 0.5 A | Version: Conformal coating
6AG1222-1BF32-2XB0Module: SM 1222 | I/O: 8 DQ 24 V DC 0.5 A | Version: -25 ... +70 °C
6AG1222-1BH32-4XB0Module: SM 1222 | I/O: 16 DQ 24 V DC 0.5 A | Version: Conformal coating
6AG1222-1BH32-2XB0Module: SM 1222 | I/O: 16 DQ 24 V DC 0.5 A | Version: -25 ... +70 °C
6AG1222-1HF32-4XB0Module: SM 1222 | I/O: 8 DQ relay 2 A | Version: Conformal coating
6AG1222-1HF32-2XB0Module: SM 1222 | I/O: 8 DQ relay 2 A | Version: -25 ... +70 °C
6AG1222-1XF32-4XB0Module: SM 1222 | I/O: 8 DQ relay changeover 2 A | Version: Conformal coating
6AG1222-1XF32-2XB0Module: SM 1222 | I/O: 8 DQ relay changeover 2 A | Version: -40 ... +70 °C
6AG1222-1HH32-4XB0Module: SM 1222 | I/O: 16 DQ relay 2 A | Version: Conformal coating
6AG1222-1HH32-2XB0Module: SM 1222 | I/O: 16 DQ relay 2 A | Version: -25 ... +70 °C
6AG1223-1BH32-4XB0Module: SM 1223 | I/O: 8 DI / 8 DQ transistor | Version: Conformal coating
6AG1223-1BH32-2XB0Module: SM 1223 | I/O: 8 DI / 8 DQ transistor | Version: -25 ... +70 °C
6AG1223-1BL32-4XB0Module: SM 1223 | I/O: 16 DI / 16 DQ transistor | Version: Conformal coating
6AG1223-1BL32-2XB0Module: SM 1223 | I/O: 16 DI / 16 DQ transistor | Version: -25 ... +70 °C
6AG1223-1PH32-4XB0Module: SM 1223 | I/O: 8 DI / 8 DQ relay | Version: Conformal coating
6AG1223-1PH32-2XB0Module: SM 1223 | I/O: 8 DI / 8 DQ relay | Version: -25 ... +70 °C
6AG1223-1PL32-4XB0Module: SM 1223 | I/O: 16 DI / 16 DQ relay | Version: Conformal coating
6AG1223-1PL32-2XB0Module: SM 1223 | I/O: 16 DI / 16 DQ relay | Version: -25 ... +70 °C
6AG1223-1QH32-4XB0Module: SM 1223 | I/O: 8 DI 120/230 V AC / 8 DQ relay | Version: Conformal coating
6AG1223-1QH32-2XB0Module: SM 1223 | I/O: 8 DI 120/230 V AC / 8 DQ relay | Version: -40 ... +70 °C

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