CTI Products IOB I/O Interface - Manual (Page 28)

IOB Hardware Reference System Examples
CTI Products, Inc.
68-11168-105
23
7.2 One of Four Select I/O Example
Figure 6 shows an I/O system that uses the IOB in 1 of 4 Select mode. The four
Select outputs are connected to relay controls and the four PTT inputs are
connected to input pins of the IOB.
COM 2
COM 1
CA-80258-100
HIB
T
P/S
IN
OUT IN
OUT
T
IOB
CIRCUIT
USER APPLICATION IOB
CIRCUIT
PTT4
PTT3
PTT2
PTT1
TX 1 SELECT
TX 2 SELECT
TX 3 SELECT
TX 4 SELECT
LOCAL PC
Figure 6 - 1 of 4 Select System Example
Just as in the previous example, we need to create a custom status text category
for this IOB. Before creating the status text messages, we should look at how
each I/O group will be configured. Figure 7 shows the I/O bit configuration for
each of the four I/O groups being used.