1. In the manual, it has been stated for the digital module 321-1bl00-0aa0 that "1" signal is 13 V to 30 V and "0" signal -30 V to 5 V. Does it mean that when voltage of any digital input address (say for example I 0.0) with respect M is 13 V to 30 V, the logic will be "1" and when the voltage level of the address is between -30 V to +5 V, the logic will be "0"?
2. Then, what will be the logic, if the address is discoonected from any source?
3. Practically it has been found to acheive "0" logic when the address is disconnected from the source. Then, what is the difference between the input disconnected from source and the input is at voltage level -30 V to +5 V?
I would be thankful if anybody make it clear to me.