GSK 980TC3 Series, Manual

Page: 69 / 226

Chapter 6 Ladder Writing Limit
57
Ⅰ
Programming
Chapter 6
Ladder Writing Limit
1. Sequence program must have END1 and END2 which are taken as the end marks of 1
st
level and 2
nd
level sequence part, and END1 must be before END2.
2. They only support the parallel output and do not support the multi-level output.
3. The result output address in all basic instructions and output function instruction are not set
the following addresses:
1 ） Counter preset address DC, timer preset address DT.
2
）
K0~K5 address are occupied by the system, and the user can’t define them.
3
）
R990, R991 address are occupied by the system. and the user can’t define them.
4
）
X address on IO input interface and CNC → PLC F address.
4. Such case like vertical line overhanging, node disconnected, horizontal through line
paralleling to the node network will result in the nodes or network that can' t be executed,
so alarm will be issued by the system.
5. Star network, in which there is no direct connection between the vertical lines of different
lines in a column, and a line in the middle isn't jointed with a vertical line. So alarm will be
issued because the case can't be processed by the system.
6. The upward convex is not allowed in the network. That is there is a parallel network above
he nodes of a line, and no line can be connected to this network. So alarm will be issued
The followings are the phrasing error, and an alarm occurs.