① set and reset. When the condition becomes “ON”, the set will be put in operation “ON”, but not as output (OUT), when the condition becomes “OFF”, the reset will not reset on the operation of “OFF”. When the condition becomes “ON”, the reduction in operation position reset “OFF”, but does not output non-directive (OUT NOT), when the condition becomes “OFF”, the reset will not reset on the operation “ON”. In the following example, no matter how IR00100, IR00100 reset “ON” IR20000 will reset when “ON”, and can remain “ON” until the IR00101 reset “ON”. When IR00101 set “ON”, the reset IR20000 reset “OFF”. Set and
No function code set and reset. From the handheld programmer to enter them as FUN and SET key or FUN and RSET button, followed by the address.
② rise differential differential and the falling edge. Rise differential and the falling edge of the so-called differential refers to the input signal front porch and back operations. Rise differential differential command is used to enable and falling in a cycle time of the built-in “ON”. In implementing the conditions “OFF” to “ON”, the rising differential instruction makes a cycle of operation “ON”, in the implementation of conditions “ON” to “OFF”, the falling differential instruction makes a cycle of operation “ON”. Both of these instructions requires only one line mnemonics.
Here, in IR00000 to “ON”, IR20001 in a cycle will reset “ON”. Then perform DIFU (13) 20001, no matter how IR00000, IR20001 will be “OFF”. Falling edge differential instruction IR00001 to “OFF” after (IR20002 “OFF” until this time), the IR20002 will be built in a cycle “ON”, and will be implemented in the next DIFD (14) 20002 post “OFF”.
Rise differential and the falling edge of differential
③ maintain. Use directives to keep based on two perform conditional operations. Doing so will keep the instructions attached to two on the command line. When the first command line execution at the end of the condition for “ON”, keep instructions operating position “ON”. When the end of the second command line execution as “ON”, keep instructions operating position “OFF”. Even if it is located in the internal interlocking parts of the program, keeping the operation of the directive will save it to the “ON” or “OFF” State.
In the example shown in Figure 1-33, when IR00002 is “ON” and IR00003 to “OFF”, the HR0000 will be set “ON”. HR0000 remain “ON” until another IR00004 or IR00005 reset “ON”. Keep instructions as the others, need more than one command line, the command line in the instruction encoding before they control.
PLC ONE 