Table 2. Overview of installed PLC hardware.
| SASE1 | SASE2 | SASE3 | SUM | |
|---|---|---|---|---|
| Digital input (DI) | 499 | 514 | 624 | 1637 |
| Digital output (DO) | 218 | 191 | 310 | 719 |
| Analogue input (AI) | 144 | 164 | 192 | 500 |
| Serial interface | 48 | 51 | 53 | 152 |
| EtherCAT bus-coupler | 36 | 46 | 42 | 124 |
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