| Numera o le mataupu | 6ES7221-1BF32-0XB0 | 6ES7221-1BH32-0XB0 |
| | Fa'aulufalega numera SM 1221, 8DI, 24V DC | Fa'aulufalega Fa'atekinolosi SM 1221, 16DI, 24V DC |
| Fa'amatalaga lautele | | |
| Fa'ailogaina o le ituaiga oloa | SM 1221, DI 8x24 V DC | SM 1221, DI 16x24 V DC |
| Voltage sapalai | | |
| Tau fa'atulagaina (DC) | 24 V | 24 V |
| vaega fa'atagaina, tapula'a maualalo (DC) | 20.4 V | 20.4 V |
| vaega fa'atagaina, tapula'a maualuga (DC) | 28.8 V | 28.8 V |
| Tafe ulufale | | |
| mai le pasi tua 5 V DC, maualuga. | 105 mA | 130 mA |
| Fa'aulufalega fa'atekinolosi | | |
| ● mai le voltage o le avega L+ (e aunoa ma se avega), maualuga. | 4 mA; i le alalaupapa ta'itasi | 4 mA; i le alalaupapa ta'itasi |
| voltage fa'aulufale / ulutala | | |
| le voltage sapalai o masini fa'asalalau / ulutala | | |
| ● galuega faatino o le oloa / sapalai o le voltage mo masini faasalalau | Ioe | Ioe |
| Leiloa o le eletise | | |
| Leiloa o le eletise, fa'ata'ita'iga. | 1.5 U | 2.5 U |
| Fa'aulufalega fa'atekinolosi | | |
| Numera o fa'aulufalega numera | 8 | 16 |
| ● i ni vaega o | 2 | 4 |
| Pi'o uiga fa'aulufale e tusa ai ma le IEC 61131, ituaiga 1 | Ioe | Ioe |
| Numera o mea e ulufale fa'atonutonuina fa'atasi | | |
| tulaga fa'apipi'i uma | | |
| — e oʻo atu i le 40 °C, maualuga. | 8 | 16 |
| fa'apipi'iina fa'alava | | |
| — e oʻo atu i le 40 °C, maualuga. | 8 | 16 |
| — e oʻo atu i le 50 °C, maualuga. | 8 | 16 |
| fa'apipi'iina fa'atulagaina | | |
| — e oʻo atu i le 40 °C, maualuga. | 8 | 16 |
| Voltage ulufale | | |
| ● Tau fa'atulagaina (DC) | 24 V | 24 V |
| ● mo le faailoilo "0" | 5 V DC i le 1 mA | 5 V DC i le 1 mA |
| ● mo le faailoilo "1" | 15 V DC ile 2.5 mA | 15 V DC ile 2.5 mA |
| Tafe ulufale | | |
| ● mo le faailoilo "0", maualuga (tafe filemu faatagaina) | 1 mA | 1 mA |
| ● mo le faailoilo "1", min. | 2.5 mA | 2.5 mA |
| ● mo le faailoilo "1", typ. | 4 mA | 4 mA |
| Fa'atuai ulufale (mo le tau fa'atulagaina o le voltage ulufale) | | |
| mo fa'aulufalega masani | | |
| — e mafai ona fa'atulagaina | Ioe; 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms ma le 12.8 ms, e mafai ona filifilia i ni vaega e fa | Ioe; 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms ma le 12.8 ms, e mafai ona filifilia i ni vaega e fa |
| mo fa'aulufalega fa'alavelave | | |
| — e mafai ona fa'atulagaina | Ioe | Ioe |
| Umi o le uaea | | |
| ● ua puipuia, maualuga. | 500 mita | 500 mita |
| ● e leai se puipuiga, maualuga. | 300 mita | 300 mita |
| Fa'alavelave/fa'amaoniga/fa'amatalaga o le tulaga | | |
| Fa'ailoilo | | |
| ● Fa'ailo fa'ama'i | Ioe | Ioe |
| Fa'ailoga LED mo le su'esu'ega | | |
| ● mo le tulaga o mea e ulufale mai ai | Ioe | Ioe |
| Tete'a e ono tula'i mai | | |
| Fa'aulufalega numera e ono mafai ona vavae'ese | | |
| ● i le va o auala, i ni vaega o | 2 | 4 |
| Tipiloma ma le vasega o le puipuiga | | |
| Tulaga o le puipuiga o le IP | IP20 | IP20 |