Appendix c: rs422/485 line interface, Blue heat/pci rs422/485, Universal blue heat/pci rs422/485 – Connect Tech Blue Heat/PCI PCI Serial Communications User Manual

Page 31: Appendix c: rs-422/485 line interface, Blue heat/pci rs-422/485, Full duplex mode, Half duplex mode, Multi-drop slave mode, Line bias/termination, Universal blue heat/pci rs-422/485