A-1
Appendix A
System Interface Description
There are two system interfaces:
S
one serial interface with RS-232C or RS-422 support (RS-422 only
CI - 4040
)
S
one Parallel Centronics interface.
The interfaces can be operated in three different modes:
for
CI - 4040
S
parallel interface active
S
parallel interface active in shared mode with serial RS-232C
S
parallel interface active in shared mode with serial RS-422
for
CI - 4050
S
serial interface active
S
parallel interface active
S
both interfaces active in shared mode
The following chapter gives an overview about interface characteristics, control
signals, protocols, and cabling.
Any change to the operation mode (PARALLEL, PARALL. / RS232, or
PARALL. / RS422; SERIAL, PARALLEL or SHARED) and to the size of the
interface buffer is possible only when the interface buffer is completely empty of
data.
Summary of Contents for C I - 4 0 4
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