Appendix A Hardware Units CI856 and TP856 – S100 I/O Interface
3BSE 027 941 R301 173
CI856 and TP856 – S100 I/O Interface
Key Features
• Provides one S100 I/O port, (a 36 pin centerline
miniature ribbon connector located on the TP856
Baseplate).
• Simple DIN-rail mounting
• The CI856 handles I/O scanning and updating of
S100 I/O units located in up to five I/O racks. The
minimum cyclic scan/update interval is 0.2ms,
though this will depend on I/O type and number of
I/O points.
• Pre-set, two-letter Alpha code locking device
installed in unit base prevents mounting of
incompatible components.
Description
The CI856/TP856 connects S100 I/O to AC 800M.The
TP856 Baseplate has one 36-pin centerline miniature
ribbon connector for connecting S100 I/O racks. The
baseplate has a code lock, see Table 6 on page 54, that
prevents installation of an incorrect type of unit onto the
TP856 Baseplate.
The CI856 expansion unit contains the CEX-bus logic,
S100 I/O-bus logics, CPU and a DC/DC converter that
supplies appropriate voltages from the +24V supply, via
the CEX-bus.
F
R
TO
CI856
I/O
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