This manual comprises three volumes that describe the TSX 3705/3708/3710/3720 micro PLCs in detail: processors, implementation/diagnostics/maintenance, integrated analog, integrated upcounting, and integrated communication. Volume 2, describes discrete input/output modules, remote adaptor modules for discrete input/outputs, process and AS-i supplies. Volume 3. analog input/output modules, counting module, and communication by PCMCIA card.