a proximity switch does not require ______ to detect the presenc
allows for tweeking the i/o manually?
connects the shield to ground to one end?
constant voltage transformers are used to?
counts up?
data compare instructions include?
difference between two?
how do lim instructions work?
in an input module, what kind of device converts a plc device?
in correct order, what does each number of this address identify
masking only passes?
most widely used?
not to use a limit but to use greater to or equal to?
rto indicates?
sequencers are used for?
status indication is useful for?
status indicators include?
subroutines are used for?
the done output bit of a counter is energized when?
the phases of a plc program scan, in correct order, are?
tof indicates?
ton indicates?
what are protective enclosures used for?
what are some causes an output blowing a fuze?
what are some types of proximity switches?
what are the typical time bases a timer can be programmed?
what do plc¡¯s replace?
what does branching provide?
what does lim refer to?
what does the memory map identify?
what is at the end of each rung?
what is not a function of a programming device?
what is the level of converting light back into an electrical si
what is the purpose of latching?
what is the purpose of plc configuration?
what kind of command is otl or otu?
what part of a plc program scan takes the longest?
what role does a plc do in a closed loop control system?
what type of device converts mechanical into electrical energy?
what type of memory is read/write memory?
what type of programming is most commonly preferred?
what type of temperature sensor produces a dc voltage?
when is a manual reset needed?
when is the device connected?
which internal timer looks for issues?
which is a malfunction due to noise functions?
which is not a status indicator?