OPTO 22 PAMUX, User Manual

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PROGRAMING WITH THE PAMUX DRIVER
Pamux User’s Guide
3-33
DIGITAL BANK OPERATIONS
The term “bank” refers to groups of eight digital I/O points. A 32-channel Pamux board with a B4 brain
board has four banks. It is faster to read a bank all at once rather than to read each point individually.
Note that channel 0 corresponds to the least significant bit. For example when reading a bank with
channels 0, 3, and 4 on and all other channels off, the returned value would be 19 hex (11001 binary, or
25 decimal).
PamuxDigBankConfig
P
ROTOTYPES
:
int PamuxDigBankConfig(int hAc28, int Bank, int OutputMask);
int PamuxDigBank16Config(int hAc28, int Bank, UINT OutputMask);
int PamuxDigBank32Config(int hAc28, int Bank, long OutputMask);
D
ESCRIPTION
:
Configures a bank of digital I/O points as either inputs or outputs. A “1” in the mask indicates an
output. Use
PamuxDigBankConfig
for configuring eight points,
PamuxDigBank16Config
for 16 points, or
PamuxDigBank32Config
for 32
points.
PamuxDigBankRead
P
ROTOTYPES
:
int PamuxDigBankRead(int hAc28, int Bank, int far* pData);
int PamuxDigBank16Read(int hAc28, int Bank, int far* pData);
int PamuxDigBank32Read(int hAc28, int Bank, long far* pData);
D
ESCRIPTION
:
Reads inputs and outputs and places the result in
pData.
Use
PamuxDigBankRead
for
reading eight points,
PamuxDigBank16Read
for 16 points, or
PamuxDigBank32Read
for 32 points.