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Serial Port Connectivity¶
The serial interface supports RS-422 four-wire, RS-485 two-wire, and RS-485 four-wire operation for equipment such as PTZ cameras and keyboards. Select the required operating mode through the device web interface or supported VMS.
Use twisted-pair wiring and the supplied terminal block socket. See Terminal Block Pinout for pin numbers.
RS-422 or RS-485 Four-Wire¶
Connect transmit signals on each device to receive signals on the other device.
| External equipment | ION-E100-HD |
|---|---|
| TX+ | RX+ |
| TX- | RX- |
| RX+ | TX+ |
| RX- | TX- |
| GND | GND |
RS-485 Two-Wire¶
- Join RX- and TX- on the encoder terminal block to form Data -.
- Join RX+ and TX+ on the encoder terminal block to form Data +.
- Connect the external equipment as follows.
- Select RS-485 two-wire mode in the management interface.
| External equipment | ION-E100-HD |
|---|---|
| Data + | Joined RX+ and TX+ |
| Data - | Joined RX- and TX- |
| GND | GND |