Command Structure - Kodak EKTAPRO 9020/CINE Service Manual

Service Manual

Command Structure

The Command Structure is binary coded with three consecutive 8-bit bytes. Synchronization is achieved by a
break in the transmission of more than three byte times. The first five bit of each command specifies the address
of the selected projector.
The 16 hardware addresses are 0-F (hex).
The address 1F (hex) is a global address that all connected projectors will accept. Several projectors can be
combined in a group by assigning them a special group address of 10 - 19 hex with a software command. Note,
global or group addresses are separate from the position that is selected on the address switch.
Three 8-bit bytes:
AAAAA MM 1
1. Byte
AAAAA
MM
CCCC
XXXX XXXX XXX
An example of command modes is:
- parameter mode
- set/reset mode
- direct mode
- status request mode
Details can be obtained from special marketing literature.
03/98
CCCC XXXD
2. Byte
address of projector
selects command mode
commands depending on selected mode
commands or information depending on selected mode
00
01
10
11
XXXXXXXD
3. Byte
In this mode, the projector returns (10 bit) data.
This mode can be used for diagnostics purposes.
3-18
SM 2547-1
Kodak AG, Stuttgart