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GSK218MC Series Machining Center CNC System PLC & Installation Connection Manual
60
Volume I
Programming
CHAPTER SIX COMPILATION LIMIT OF LADDER DIAGRAM
1. The program should with the codes END1 and END2, which are regarded as the end symbol
of the 1
st
level and 2
nd
level program, and the END1 should be placed before END2.
2. It is only support the parallel output instead of the multi-level output.
3. The result output address in the overall basis codes, output function codes can not be set as
the following addresses:
1) Counter presetting address DC, timer presetting address DT.
2) The addresses from K0 to K5 are occupied by system, user can not define it.
3) The addresses G63, R510 and R511 are occupied by system, and therefore the user can
not define it.
4) X address and F address on the I/O input port.
4. The vertical hovering, the node point does not connect to the following node and the parallel
conducting line is performed the parallel connection to the node network of which the
above-mentioned circumstances will generate the node or network which can not be
performed; and therefore, the system alarm occurs.
5. The start network, that is, it does not connect directly between different vertical lines in the
same row; one of row does not consecutively connect to the vertical line. As for this case, the
system can not be treated, and therefore the alarm occurs.
6. The upper embossment can not be accepted inside the network, that is, the parallel network
generates on several nodes on one certain row, and any row of it can not be connected to this
parallel network. The system alarm may issue.
The following cases are regarded as syntax error, the system alarm may occur.
（
W
）
（
W
）
（
W
）
（
W
）
（
W
）
（
W
）
（
W
）
Fig. 6.1
