C500BC061 Omron, C500BC061 Datasheet - Page 48

• Manufacturer Part Number: C500BC061
• Description: BACKPLANE
• Manufacturer: Omron

Specifications of C500BC061

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

C200H Host Link Units
2-1-6
Minimum response time =
Maximum response time =
Combined Systems
Minimum response time =
32
I/O Response Time
Input ON delay + Command transmission time + (cycle time of PC for Unit #0 x 3) + Response transmis-
sion time + Host computer processing time + Command transmission time + (cycle time of PC for Unit #31
x 3) + Output ON delay
Input ON delay + Command transmission time + (cycle time of PC for Unit #0 x 10) + Response transmis-
sion time + Host computer processing time + Command transmission time + (cycle time of PC for Unit #31
x 10) + Output ON delay
Input ON delay + Command transmission time + (cycle time of PC for Unit #0 x 3) + Response transmis-
sion time + Host computer processing time + Command transmission time + Output ON delay
The processing that determines and the methods for calculating the minimum
and maximum times required from an input on one PC with a Host Link Unit to an
output on another PC with a Host Link Unit are described below. The transfer
between the PCs is handled through a host computer connected to both these
PCs.
Processing and calculations are described by PC model in the first subsection
and for Systems combining C200H/HS/HX/HG/HE and C1000H PC models in
the last subsection. Although more precise equations may be written if required,
those used in the following calculations do not consider fractions of a cycle.
The calculations used in this section assume that all host computer commands
and PC responses require no more than one host link servicing period to com-
plete transmission. To compute response times for situations involving a longer
command and/or response, the number of host link servicing periods (i.e., the
number of cycles) required to complete the command or response would have to
be incorporated into the equations.
In considering response times, it is important to remember the sequence of pro-
cessing that occurs during the PC cycle. The main factor that affects the re-
sponse time is the timing of inputs and outputs and of host computer processing
in relation to this sequence.
The following diagram illustrates the setup used in response time calculations
The following equations can be used as required to calculate the minimum and
maximum response times with the C200H. The maximum response time is an
approximation.
When transferring data from one model of PC through a host computer and then
out to a different model of PC, all that is necessary is to combine the first half of
the minimum/maximum equation for the origin PC with the second half of that for
the destination PC. For example, the following equation can be used for the mini-
mum response time when transferring from a C200H/HS/HX/HG/HE to a
C1000H.
Input
Host Link
Unit # 0
PC
cycle time
(50 ms)
Host computer
Host Link
Unit # 31
PC
Output
x
cycle time
(30 ms)
+
Section 2-1