ISaGRAF based uPAC The controller fully supports all five of the IEC61131-3 standard PLC languages:
1. Ladder diagram.
2. Function block diagram.
3. Sequential function chart.
4. Structured text.
5. Instruction List plus flow chart.
It supports DCON and Modbus protocol to link to remote I/O modules via the RS-232/485 or Ethernet.