Axis T99A12, Installation Manual

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AXIS T99A12 Positioning Unit 24 V AC/DC
RS485/RS422 connector
Two 2-pin terminal blocks for RS485/RS422 serial interface used to control auxiliary equipment
such as pan-tilt devices.
The serial port can be configured to support:
• Two-wire RS485 half duplex
• Four-wire RS485 full duplex
• Two-wire RS422 simplex
• Four-wire RS422 full duplex point to point communication
Function Pin Notes
RS485/RS422 RX/TX A 1
RS485/RS422 RX/TX B 2
(RX) For full duplex RS485/RS422
(RX/TX) For half duplex RS485
RS485/RS422 TX A
3
RS485/RS422 TX B
4
(TX) For full duplex RS485/RS422
Cables
Cable thickness
The cable diameter, when using cable gaskets provided with the product, should be in the range of
5 to 11 mm (0.2 to 0.4 in).
NO NO NOTICE TICE TICE
• Use cables that keep within the specified cable area
• Select cables in compliance with your local regulations
• Make sure all cable holes are properly sealed
• Use cable gaskets or cable glands that match both the cable hole and the cable area
For information about accessories, such as cable gaskets and cable glands that allow for other
cable areas, see
www.axis.com
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