Direct Hardware Control; Reading The Outputs; Writing The Outputs; Register Description - SeaLevel 8003e User Manual

In systems where the users program has direct access to the hardware (DOS) the tables that follow give the
mapping and functions that the REL-16.PCIe provides.
Function Available
RD/WR
RD/WR
RD/WR = Read or Write
The relay ports return the ones complement of the value that is currently being used to drive the relays.
The output ports are the only ports that can be written. The relays on a standard REL-16.PCIe are normally
open. To close a relay a one must be written to the appropriate bit.
Address
Base+2 Output Port A
Base+3 Output Port B
©Sealevel Systems, Inc.
SL9235 3/2013
Port Address Hex
A Base + 2
B Base + 3
Mode D7 D6
RD/WR PCD7 PCD6
RD/WR PDD7 PDD6
8003e Manual
Port Type
Reed Relay Output Port
D5 D4 D3
PCD5 PCD4 PCD3
PDD5 PDD4 PDD3
D2 D1 D0
PCD2 PCD1 PCD0
PDD2 PDD1 PDD0
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