Description 6ES7321-1BL00-0AA0 Siemens S7-200 PLC Digital Input Module consists of the binary input (0 or 1) that is applied to PLC. Binary inputs vary in voltage from 5V to 230V, depending on the type of card used. Simply put, any push-button, switch or sensor creates a digital input in a PLC. Specification Brand name: Siemens Product name: Siemens S7-200 PLC Digital Input Module Product model: 6ES7321-1BL00-0AA0 Power supply: 24 VDC Number of digital input: 32 points Country of origin: China ...