J4: Relays and Optocouplers
Opto 0- | 1 | 2 | Opto 0+ |
Opto 1- | 3 | 4 | Opto 1+ |
Opto 2- | 5 | 6 | Opto 2+ |
Opto 3- | 7 | 8 | Opto 3+ |
No connection | 9 | 10 | No connection |
Relay 0 NO | 11 | 12 | Relay 0 NC |
Relay 0 C | 13 | 14 | Relay 1 NO |
Relay 1 NC | 15 | 16 | Relay 1 C |
Relay 2 NO | 17 | 18 | Relay 2 NC |
Relay 2 C | 19 | 20 | Relay 3 NO |
Relay 3 NC | 21 | 22 | Relay 3 C |
Relay 4 NO | 23 | 24 | Relay 4 NC |
Relay 4 C | 25 | 26 | Relay 5 NO |
Relay 5 NC | 27 | 28 | Relay 5 C |
Relay 6 NO | 29 | 30 | Relay 6 NC |
Relay 6 C | 31 | 32 | Relay 7 NO |
Relay 7 NC | 33 | 34 | Relay 7 C |
Signal Name | Definition |
Relay output contacts: |
|
Relay N C | (N = 0 to 7) Relay output common contact; this contact is always |
| used with relay output connections. |
Relay N NC | Relay output normally connected contact; this contact is connected |
| to the Out N C contact when power is off or when a 0 is written to the |
| relay’s control bit in the relay control register, and it is disconnected |
| when power is on and a 1 is written to the relay’s control bit. |
Relay N NO | Relay output normally open contact; this contact is disconnected |
| when power is off or when a 0 is written to the relay’s control bit in |
| the relay control register, and it is connected to the Out N C contact |
| when power is on and a 1 is written to the relay’s control bit. |
Optoisolated input contacts: | |
Opto N + | (N = 0 to 3) Optoisolated input contact, high side |
Opto N - | Optoisolated input contact, low side; opto inputs are polarized |
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