GE Datex-Ohmeda S/5 - 2 Functional Description; Command Bars, K-ANEB;K-ICUB; Command Bar PCB; Comwheel

S/5
TM
Command Bar, K-ANEB, K-ICUB
3
Document no. M1125639-03
2 Functional description
2.1 Command Bars, K-ANEB/K-ICUB
Figure 1 K-ANEB/K-ICUB block diagram
2.1.1 Command Bar PCB
The PCB is located inside the Command Bar. The board reads the status of the front panel keys
and the ComWheel and forwards the information to the CPU board.
2.1.2 External communication
Communication with the host processor takes place in RS232 serial communication channels
which are available in both the CPU bus and the module bus. Two signals, TXD and RXD, are in
use. No handshaking is used. The 26-pin subminiature D-connector of the Command Bar is
connected to a B-CPU6. Serial communication speed rate is 19.2 kbps.
2.1.3 ComWheel
The ComWheel on the front panel is used for menu selection.
Command_bars_blck_diagram.vsd
CPU
PROGRAM
MEMORY
EPROM
KEYBOARD
SCANNING
CIRC UIT
ALARM
LEDS
KEYBO ARD
COMWHEEL
ON/STBY
SWITC H
STBY
LED
RS-232
X4
X1
X2
KEYBOARD P CB
B-CPU6
B-CPU6