Toshiba TOSDIC-CIE DS Manual

Appendix2. The diffrence between DPCS and DPCS Emulator
42
Table A2.2 List of the difference (2)
Timing of Operation
Item DPCS DPCE Emulator Notes
Scan Period Each control card
have scan period.
(200ms – 5sec)
There are two scan
period. These period are
High speed scan and
Main speed scan.
In DPCS, each control card has its own
scan period. But in DPCS Emulator,
each control card should be either High
speed scan period or Main speed scan
period.
VPCPX2 and VPCPX2B have four
independent scan periods. But on
DPCS Emulator, VPCPX2(B) has only
one scan period.
Synchronization Asynchronous In the same scan period,
each control program is
executed in series.
The programs on High
speed scan are prior to
the programs on Main
speed scan.
The program that is not considered
synchronicity and simultaneity may have
a influence.
Data exchange speed between
VSCPX2 and VPCPX2 is more higher.
External Variable Asynchronous
High Speed 1sec
Low Speed 3sec
Collect the data using
MC Bus.
It synchronize on scan
period. At the head of
scan period, the data are
collected by the direct
memory access.
The program that is not considered
synchronicity and simultaneity may have
a influence.
Sequence Asynchronous It synchronize on scan
period. At the head of
scan period, the data are
collected. The collected
data was generated at
previous scan execution
time.
The program which is not considered
synchronicity and simultaneity may have
a influence.

Toshiba TOSDIC-CIE DS Specifications

General

Brand	Toshiba
Model	TOSDIC-CIE DS
Category	Control Systems
Language	English