The Siemens S7-200 6ES7-231-0HC22-0XA0 ANALOG INPUT Module EM 231 there is 4AI 0-10V DC. There have SIMATIC 6ES7-231-0HC22-0XA0 S7-200 plc series which have ANALOG INPUT EM 231, FOR S7-226, 224, and 222 CPU only 4 AI and, 0 – 10V DC 12 BIT CONVERTER.
Siemens S7-200 6ES7-231-0HC22-0XA0 Supported Input-Output Module data :
| Memory Cartridge, 64 Kbytes | 6ES7 291-8GF23-0XA0 |
| Memory Cartridge, 256 Kbytes | 6ES7 291-8GH23-0XA0 |
| Siemens S7-200 ANALOG INPUT | 6ES7 231-0HC00-0XA0 |
| Siemens S7-200 ANALOG INPUT EM231 | 6ES7 231-0HC20-0XA0 |
| Siemens S7-200 ANALOG INPUT EM 231 | 6ES7 231-0HC21-0XA0 |
| EM 231, 4AI, DC 0-10V, 12 bit | 6ES7 231-0HC22-0XA0 |
| RTD INPUT MOD. EM 231 | 6ES7 231-7PB20-0XA0 |
| EM 231, 2AI, 15 bit | 6ES7 231-7PB22-0XA0 |
| T/C INPUT EM 231 | 6ES7 231-7PD20-0XA0 |
| Siemens S7-200 T/C INPUT MOD. | 6ES7 231-7PD21-0XA0 |
| EM 231, 4AI, +/-80 MV, 15 bit | 6ES7 231-7PD22-0XA0 |
| S7-200 6ES7-231-0HC22-0XA0 ANALOG OUTPUT | 6ES7 232-0HB00-0XA0 |
| ANALOG OUTPUT EM 232 | 6ES7 232-0HB20-0XA0 |
