40 Process Interconnections
40.60.00 Process Control and Enterprise Management Systems
40.61.00 Process Control and Enterprise Management Systems General Provisions 40.62.00 Computer System Hardware and Ancillaries 40.63.00 Control System Equipment 40.66.00 Network and Communication Equipment 40.67.00 Control System Equipment Panels and Racks 40.68.00 Process Control Software 40.69.00 Packaged Control Systems