5 Function module F23
Festo – P.BE-CPX-FB23-24-EN – 1305a – English 71
5.3.2 Address assignment after extension/conversion
If the requirements on a machine change, the CPX terminal can be adapt ed as required due to its modu-
lar design.
Caution
If the CPX terminal is extended or converted at a later stage, input/output addresses
may be shifted. This applies in the following cases:
– Additional modules are inserted between existing modules.
– Existing modules are removed or replaced by other modules which have fewer or
more input/output addresses.
– Interlinking blocks and/or pneumatic manifold blocks for monostable valves are
replaced by interlinking blocks/manifold blocks for bistable valves or vice versa
( Pneumatics description).
– Additional interlinking blocks and/or manifold blocks are inserted between existing
ones.
– The configured addresses of the pneumatics interface are modified.
If the configuration of a CPX terminal is c hanged, the required number of stations must be determined
and adjusted to correspond with the new address assignment ( Fig. 5.6).
Moreover, it has to be noted that the needed address space may increase due to modific-
ation of the CPX terminal and thus the slave addresses of the following slaves in the field
bus must be checked and adjusted if necessary.
5.3. 3 CC-Link memory mapping
Remote Ready (RR, CC-Link-specific)
The Remo te Ready bit is set to “1” by bus node after successful initialization. The address space of 2
bytes is always assigned with 1 bit in the bit range (RX, RY) at the end of the last station
( e.g. Fig. 5.5).
Bit 11 of the input section (RX) includes respect ively the Remote Ready bit.
Digital inputs and outputs (I/Os)
Digital I/Os occupy from the first station, if it is not allocated to analog I/Os, one after the other the bit
range (RX/RY) ( section 5.3.1).
To Next Page
Loading...
