Zodiak Installation and Service Manual
277
Peripheral Bus II
Peripheral Bus II
In a Peripheral Bus II system, the physical devices being controlled can be
connected to a common serial port and daisy chained together. The Zodiak
PBus II interface protocol currently accommodates up to four peripheral
devices on the same serial bus. The Zodiak system acts as the master con-
troller on the bus. Each peripheral device needs a unique Peripheral Bus II
address (0 through 23), which is generally set in software on the peripheral
device itself. The Zodiak system uses these addresses to send commands to
the correct peripheral device.
Peripheral Bus II commands generally are triggers sent from the Zodiak
system that initiate an action on the peripheral device. Up to sixteen trig-
gers (0 through 15) can be sent to a peripheral device. Each peripheral
device supporting the Peripheral Bus II protocol will have its own set of
trigger commands defined by the manufacturer. Refer to the documenta-
tion provided with the peripheral device for specific information about its
capabilities.
Zodiak System Peripheral Bus II Configuration and Operation
Zodiak Control Interface Cabling
Connect the peripheral device(s) with a standard RS-422 9-pin serial cable
to any unused serial port (Serial 1 – Serial 4) on the rear of the Zodiak Video
Processor frame (
) with the pinout described in
. Up to four devices can be daisy-chained on one serial port
under PBus control.
E-MEM Level Groups
Peripheral Bus II control is associated with the
Misc 2
E-MEM level group
on the Zodiak Main panel by default. This can be changed in the Suite Prefs
– E-MEM Prefs menu (
). See the Zodiak User Manual
for details.
