# MSSR-24

All MetraBus boards require a cable and an interface board (such as an ISA-, PC104-, or PCI- MDB64) to interface to the host computer system.

The MSSR-24 supports the following UL and UL for .NET features.

## Digital I/O

Functions

UL: cbDIn(), cbDBitIn(), cbDOut(), cbDBitOut()

UL for .NET: DIn(), DBitIn(), DOut(), DBitOut()

PortNum

FIRSTPORTA, FIRSTPORTB

SECONDPORTA

DataValue

0 to 255

BitNum

0 to 24 using FIRSTPORTA