<P>正在学习 PPCL,问题如下</P>
<P>100 C<BR>101 C THIS CODE PROVIDES A TEST FOR<BR>102 C COMMANDING PULSED POINTS. TYPES CAN<BR>103 C BE A L2SP, LOOAP, OR LFSSP POINT.<BR>104 C ANY POINTS STARTING WITH "PUL" ARE<BR>105 C PULSED POINTS. VLDO IS A POINT<BR>106 C FLAG.<BR>107 C<BR>119 C CHECK IF THE PULSE POINTS ARE ON<BR>120 IF (VLDO.EQ.1) THEN GOTO 140<BR>129 C TURN ON PULSE FLAG<BR>130 ON(PUL1#1,PUL2#1,PUL3#1,VLDO)<BR>140 ...<BR>159 C CHECK IF PULSE POINTS ARE OFF<BR>160 IF (VLDO.EQ.0) THEN GOTO 190<BR>169 C TURN OFF PULSE POINTS<BR>170 OFF(PUL1#2,PUL2#2,PUL3#2,VLDO)<BR>179 C TURN OFF PULSE FLAG<BR>180 OFF(VLDO)<BR>190 ...</P>
<P>问题1: 在进行POINT的status操作的时候,是不是不需要先判断这个point的priority呢?,有没有这个情况出现,就是POINT的PRIOTITY 为 OPER的时候,DDC的程序是无法控制的,必须先RELEASE 一下呢?</P> |
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