Generally, the ABLE Act permits a state to establish and maintain a new type of tax-advantaged savings program (under Section 529A of the Internal Revenue Code). Contributions may be made to a 529A account established for a designated beneficiary to pay for qualified disability expenses. Guidance.
See footnotes for more details. OPC is implemented in server/client pairs. The OPC server is a software program that converts the hardware communication protocol used by a PLC into the OPC protocol. The OPC client software is any program that needs to connect to the hardware, such as an HMI.
APPC Overview. 1  Advanced Program-to-Program Communication (APPC) is an implementation of the Systems Network Architecture (SNA) LU 6.2 protocol on a given system. APPC allows interconnected systems to communicate and share the processing of programs.