Klein + Hummel K8-AI8, Operating Manual

Page: 22 / 76

Page 22 K8 Rackmount Family User Manual
Termination Setting
The first 3 configuration DIP switches must be set to “on” when the ESB is the last device in the K8 chain.
K8 link port connected:
Termination Off
K8 link port not connected: Termination On
Control and Monitoring
All devices on the K8 bus may be controlled and monitored through a single RS-485 connection to the ESB
device. The protocol is openly published on
www.klein-hummel.com for use by software engineers and
control system programmers. The pinout of the RS-485 port is as follows:
PIN 1 Phantom Ground
PIN 2 Phantom Power
PIN 3 Data A (+)
PIN 4 Data B (-)
PIN 5 Signal Ground
PIN 6-9 Not Used
A limited amount of serial data tunnelling is available between the serial ports on any two devices in the
system. This is useful for passing control data to another system, such as a lighting controller or external
relay box located in the same equipment area as the K8 output box.
The phantom power is used to drive K8 accessories designed to attach to the local control connector, such
as a local volume control wall plate. Phantom power is switched off by default and must be activated
through the control protocol.
Compatible Accessories
K8
K8 K8
K8----485
485 485
485 USB to RS-485 adaptor cable for using a PC to program K8 system devices.
K8
K8 K8
K8----***
*** ***
*** A variety of input and output signal types are available and always growing.
K8
K8 K8 K8----RMK RMK RMK RMK Half rack mounting kit, accepts up to two devices.
K8
K8 K8 K8----FMK FMK FMK FMK Flange mounting kit for mounting the device under tables, etc.
DB9 Female Control Connector