Summary of XC series PLC
1-1. Summary of XC series PLC and program format
XC series programmable controller
z I/O 14~60 points
z FlashROM memory inside
z Real time clock: With clock inside, Li battery power drop memory
z Multi-COM ports can connect with inverters, instruments, printers etc.
z Rich instructions, convenient to program
Introduction
Program
Format
Statement Program
Statement program is the format which use“LD”, “AND”, “OUT”
etc. These SFC instructions to input this format is the basic input
form to compile the SFC program
E.g: Step Instruction ID
0 LD X000
1 OR Y005
2 ANI X002
3 OUT Y005
Ladder Program
Use sequencial control signal and soft unit’s ID to draw the
sequencial circuit’s graph on the screen, which is called ladder
program. As this method uses trigger point’s symbols and coil
symbols to denote the sequencial control circuit, so it is easy to
understand the program’s contents. At the same time it’s also
available to monitor the PLC’s action via the status displayed in the
circuit.
E.g:
X0 X2
Y5
Y5
The programs compiled with the preceding two methods are both
stored in the PLC’s program memory in the format of instruction
table. So, the denotion and edition of this two program format can
convert to the other.
Alternation
6
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