PLC set and reset commands usage

1 SET instructions
 
SET command called reset instructions. Its function is to: driving coil, making it with locking function, maintain the on State. In Figure 1, when the movable contact X0 closed, SET instruction is executed, Y0 coil connected. After first X0, Y0 coils to keep the on State to Y0 coil power, you must use the RST reset instructions.
Reset instructions operating elements for the output relay y s m, auxiliary relays and relay.
 
2 RST directive
 
RST command called reset instructions. Its function is to reset the coils. In Figure 1, when the movable contact X1 closed, RST instruction is executed, Y0 reset coils. After first X1, Y0 coils remain a disconnected state.
Reset instructions operating elements for the output relays, auxiliary relays y m t, s, integrating state relay timer, counter, c. It is also zero out the word element d, v, z.
 
 

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