Installation,
Wiring,
and
Specifications
2--45
Installation, Wiring, and Specifications
DL105 PLC User Manual, 3rd Edition
Glossary of Specification Terms
Discrete Input
One of ten input connections to the PLC which converts an electrical signal
from a field device to a binary status (off or on), which is read by the
internal CPU each PLC scan.
Discrete Output
One of eight output connections from the PLC which converts an internal
ladder program result (0 or 1) to turn On or Off an output switching device.
This enables the program to turn on and off large field loads.
I/O Common
A connection in the input or output terminals which is shared by multiple
I/O circuits. It usually is in the return path to the power supply of the I/O
circuit.
Input Voltage Range
The operating voltage range of the input circuit.
Maximum Voltage
Maximum voltage allowed for the input circuit.
ON Voltage Level
The minimum voltage level at which the input point will turn ON.
OFF Voltage Level
The maximum voltage level at which the input point will turn OFF
Input Impedance
Input impedance can be used to calculate input current for a particular
operating voltage.
Input Current
Typical operating current for an active (ON) input.
Minimum ON Current
The minimum current for the input circuit to operate reliably in the ON
state.
Maximum OFF Current
The maximum current for the input circuit to operate reliably in the OFF
state.
OFF to ON Response
The time the module requires to process an OFF to ON state transition.
ON to OFF Response
The time the module requires to process an ON to OFF state transition.
Terminal Type
Indicates whether the terminal type is a removable or non-removable
connector or a fixed terminal.
Status Indicators
The LEDs that indicate the ON/OFF status of an input or output point. All
LEDs on DL105 Micro PLCs are electrically located on the logic side of the
input or output circuit.
Содержание DL105
Страница 2: ...DL105 PLC User Manual Manual Number D1 USER M...
Страница 308: ...1B DL105 Error Codes In This Appendix Error Code Table...
Страница 314: ...1C Instruction Execution Times In This Appendix Introduction Instruction Execution Times...
Страница 324: ...1D Special Relays In This Appendix DL105 PLC Special Relays...
Страница 327: ...1E PLC Memory In This Appendix DL105 PLC Memory...
Страница 329: ...1F European Union Directives CE In This Appendix European Union EU Directives Basic EMC Installation Guidelines...