10
Intermittent communication problems or erratic operation may require network speed drops to 9,600 or 19,200 Bauds. Varying
the network speed does not perceptibly change the operation speed of the system. Usually, most installations should be set to
19,200 Bauds.
NOTE:
To learn more about USB-485 wiring, please refer to the
USB-485 Installation Sheet
, DN1482.
Connecting the Master Controller to the Host
PC
Connect flat cable from KT-315 to the PC.
From 0 to 30 m (0 to 100 feet):
If the local master controller is located less than 30m
(100 feet) from the host computer, use the on-board RS-
232 RJ12 jack and the supplied flat cable.
From 30 m to 1.2 km (100 to 4,000 feet)
If the master controller is located more than 30 m (200
feet), an optional VC-485 multi-function communication
interface must be used. It can also be used when
running a communication cable in areas unusually high
in electrical noise.
NOTE:
The host computer is used to program the KT-
315 Controllers.
Over Corporate Network (LAN)
If the master controller is used in a LAN-enabled corporate setting, use TCP/IP-to-RS-232
converter (such as the Kantech IP Link or the Lantronix UDS-1100 communication
interface) to connect the controller to the corporate network. This method uses existing
wiring for data exchange between EntraPass and the controllers. The diagram on the left
shows how to connect a DB-9 to RJ-12 flat cable between the master controller and the
converter. Consult
Application Note
DN1506 to learn how to set up the communication
interface.
