Avigilon ENC-4PORT, Operating And Installation Instructions, Page: 15 / 24

15
Connecting to External Devices
The encoder can be connected to external devices through the I/O terminal on the rear of the
encoder. The pinout for the I/O terminal is shown in the table below. Consult the software user
guide for details on how configure the I/O.
Table:
External I/O Terminals
Pin Function Description
1 GND Ground for RS-485 interface.
2 RS-485 RX/TX+ Half-duplex RS-485 interface for controlling external
equipment.
3 RS-485 RX/TX-
4 I/O Common Shared pin for Input and Output.
5 Input 4 (+) The input uses a photocoupler and is electrically isolated from
the internal circuitry. The input voltage should not exceed 12 V.
6 Input 3 (+) Same as above.
7 Input 2 (+) Same as above.
8 Input 1 (+) Same as above.
9 Output 4 The output uses a photocoupler and is electrically isolated
from the internal circuitry. The output terminal connections
can be made with either polarity. The output can drive a
maximum load of 50 V and 120 mA.
10 Output 3 Same as above.
11 Output 2 Same as above.
12 Output 1 Same as above.