Vipa Lib - YASKAWA CP 040 RS422/485 Manual

VIPA System SLIO

4.4.2 VIPA Lib

HB300 | CP | 040-1CA00 | en | 18-28
n The data blocks must be assembled in the CPU.
n Since the data exchange via the backplane bus runs asynchronously, a software
handshake is used between the CP and the CPU. For this, both handling blocks have
the common CONTROL parameter. The same flag byte is to be used for this param-
eter.
FIFO Ring buffer max. 250 telegrams 1024byte
CONTROL Software handshake via CONTROL block
For recognizing a signal change a minimum pulse time is necessary. The
decisive factors are CPU cycle time, the refresh time on the CP and the
response time of the communication partner.
More information about the usage of these blocks can be found in the
manual "Serial Communication - SW90GS0MA" at www.vipa.com in the
"Service/Support" area at 'Manuals è VIPA Lib'.
Communication via handling blocks > VIPA Lib
Deployment
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