Appendix2. The diffrence between DPCS and DPCS Emulator
46
Item DPCS DPCE Emulator Notes
Switching
conditions
Per control card
Communication error
Self diagnostic check
of Hard ware.
Self diagnostic check of
emulation module.
Self diagnostic check of
I/O modules.
Communication error of
Ethernet communication
module.
Check memory and
interrupt.
All connection error with
Serial I/O.
Transmission
errors when
switching over
D-data from VETH
card may have
temporary
transmission error
Any V-data may have
temporary transmission
error
Refer to " V-Para communication error "
MV holding when
switching over
VMVUX1 holds MV
current
SLP05 module holds MV
current
When SLP05 module is
pulled off, MV disappears.
Switching over command by
engineering tool will not affect MV.
Registration of
redundant
configuration.
VCMPX5/VMMSX2,
VSCPX2, VACPX2,
VPCPX2
Contiguity
registration
VLCPXn
Need to register
VBMPX1.
All redundant
configuration is ignored.
Only primary side registration of control
card is effective. VBMPX1 control card
is ignored.
Table A2.5 List of the difference (5)
Operation from HMI
Item DPCS DPCE Emulator Notes
Write parameter Asynchronous on
scan
Synchronous on scan Write request send to control card
emulation at free time of scan.
Control card execute write request at
scan time of control card.
Remote
Operation
Synchronous on scan
SV/Mode Operation.
Asynchronous on
scan
DO Operation.
MV Operation.
Synchronous on scan In DPCS, MV/DO output is
asynchronous on scan. In DPCS
emulator MV/DO output is synchronous
on scan. For this reason, MV/DO output
is delayed for short time.
MV operation Asynchronous on
scan but output
immediately
accessing output
circuits just as
manipulating valves.
Synchronous on scan. Synchronous can result 1 scan slower.
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