Omron C200HW-CORT21-V1, Руководство по эксплуатации

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Performance
Section 2-3
27
2-3-3 Overall performance
This section describes the performance of the C200HW-CORT21-V1 in
combination with the host PLC.
First, the I/O response time is described. This is the time between an input
being set (or reset) on an Input Node and an output being set (or reset) on an
Output Node, all under the condition that the Input Node and Output Node
are linked to the C200HW-CORT21-V1.
After that, the maximum transmission / reception rate of user defined CAN
messages is described.
2-3-3-1 I/O response time
Minimum vs. maximum
The figures below show the minimum and maximum I/O response time. In
the bottom figure, the processing of received messages is finished just after
a PLC I/O refresh, and the received application data cannot be transferred to
the PLC until the next I/O refresh. The other factors that can influence the I/O
response time are for both cases identical and are explained below.
PLC
CORT21-V1
Bus
Input node
Output node
t
IN
t
MD
t
UPR
t
RF
t
PE
t
RF
t
UPT
t
MD
t
OUT
minimum I/O response time
PLC
CORT21-V1
Bus
Input node
Output node
t
IN
t
MD
t
UPR
t
PE
t
RF
t
PE
t
RF
t
UPT
t
MD
t
OUT
maximum I/O response time
t
IN
: Input Node ON (OFF) delay t
UPR
: Unit Processing time for Received messages
t
OUT
: Output Node ON (OFF) delay t
UPT
: Unit Processing time for Transmitted messages
t
MD
: Message Delay time t
PE
: Program Execution time
t
RF
: I/O Refresh time