Functions Of Plcs - Toshiba TOSDIC-CIE DS Function Manual

3. Basic Specification

Functions of PLCS

The functions of PLCS is registered with the PLCS server engineering tool.
Table 3.3 shows the basic specification of tags supported by the PLC server.
Item
Tag Count
Tag Type
PolyLine
Information
Input Signal Type
Alarm process
(with alarm
suppress function)
Tag Write
Operation Processes
Operation Record
FI
Signal Change
Buzzer Output
32
Table 3.3.
Specifications
Digital : 4096 tags/second
Analog : 200 tags/second - 1024 tags/5 seconds Total 4096 tags
However, Max.990 tags/PLC(when 1 tag is counted as 1 word)
Digital : PB2p/PB4p/PB8p(only for PLC)
PB3e(only for L1)
Analog : INDp/PFIp/SETp (only for PLC)
DB1p/DB8p(PLC,L1 common use)
INDe/TTLe/PIDe/SPIe/MAe/RSe(only for L1)
Polyline information used for linearization conversion is included as parameter tags.
Polyline count: 256 point(Point Count : 11 points/poly line)
Only instantaneous values are used as input signals for analog tags.
Count value ( -32768 to 32767, integer/BCD)
Linearize value (% value, real number)
Engineering unit value (real number)
Digital tags
DI1-DI8 error
Analog tags
Pv sensor high /low limit alarm
PV over limit/high limit/low limit/under limit alarm
PV process error
PV rate-of-change alarm
Positive deviation/negative deviation alarm
Digital
Operations(latch, momentary, etc.) corresponding to
a pushbutton command (RFO) are implemented by the PLC
application.Errors such as network down during momentary are
handled by the PLC application.
Analog
After a SETp tag SV value write is deleted, the FBSV value ie updated by the PLC
application.
Analog tags
Liniarization conversion(uses polyline information) Power
factor conversion, phase angle conversion(PFIp/PFIs tags only)
Digital tags
Input/output signals inversion
For digital tags, operation record can be enabled or disabled for signal changes.(Input signal
operation record, output signal operation record)
For digital tags, buzzer output can be enabled or disabled for FI signal changes.
Basic specifications of PLC