一、標(biāo)準(zhǔn)觸點 LD、A、O、LDN、AN、ON、 LD，取指令。表示一個與輸入母線相連的常開接點指令，即常開接點邏輯運算起始。LDN，取反指令。表示個與輸入母線相連的常閉接點指令，即常閉接點邏輯運算起始。A，與指令。用于單個常開接點的串聯(lián)。AN，與非指令。用于單個常閉接點的串聯(lián)。O，或指令。用于單個常開接點的并聯(lián)。ON，或非指令。用于單個常閉接點的并聯(lián)。二、正、負(fù)跳變 ED、EU ED，在檢測到一個正跳變（從OFF到ON）之后，讓能流接通一個掃描周期。EU，在檢測到一個負(fù)跳變（從ON到OFF）之后，讓能流接通一個掃描周期。 三、輸出 = =，在執(zhí)行輸出指令時，映像寄存器中的參數(shù)位被接通。 四、置位與復(fù)位指令S、R S，執(zhí)行置位(置1)指令時，從bit或OUT的地址參數(shù)開始的N個點都被置位。R，執(zhí)行復(fù)位(置0)指令時，從bit或OUT的地址參數(shù)開始的N個點都被復(fù)位。置位與復(fù)位的點數(shù)可以是1-255，當(dāng)用復(fù)位指令時，如果bit或OUT的是T或C時，那么定時器或計數(shù)器被復(fù)位，同時當(dāng)前值將被清零。五、空操作指NOP   NOP指令不影響程序的執(zhí)行，執(zhí)行數(shù)N（1-255）。

1、 Standard contacts LD, a, O, LDN, an, on, LD, take the command. Indicates a normally open contact command connected to the input bus, that is, the start of normally open contact logic operation. LDN, reverse the instruction. Indicates a normally closed contact command connected to the input bus, that is, the start of the logic operation of the normally closed contact. A. And instructions. Used for series connection of single normally open contact. An, and non directive. Used for series connection of single normally closed contact. O. Or instructions. Used for parallel connection of single normally open contact. On, or non command. Used for parallel connection of single normally closed contact. 2、 Positive and negative jump ed, EU ed, after detecting a positive jump (from off to on), let the energy flow turn on for a scanning cycle. EU, after detecting a negative jump (from on to off), let the energy flow turn on for a scanning cycle. III. output = =, when executing the output instruction, the parameter bit in the image register is turned on. IV. set and reset instructions s, r s, when executing the set (Set 1) instruction, n points starting from the address parameter of bit or out are set. R. When the reset (set to 0) instruction is executed, n points starting from the address parameter of bit or out are reset. The number of points for setting and resetting can be 1-255. When using the reset instruction, if the bit or out is t or C, the timer or counter will be reset and the current value will be cleared. 5、 Empty operation refers to NOP. The NOP instruction does not affect the execution of the program, and the number of executions is n (1-255).