9
5. Operation
5.1 Status Indicators
Activating a keypanel key that is assigned to a GPI
output will cause the appropriate OUTPUT STATUS
indicator on the UIO-256 front panel to light, and the
relay contact for that output will activate. Activating a
GPI input from an external device will cause the appro-
priate INPUT STATUS indicator to light, and the
keypanel key assignment or other device within the
intercom system that is assigned to that GPI input will
activate.
When using multiple UIO-256 frames, the status of the
first 16 GPI output and inputs will be indicated by the
status indicators on the first UIO-256. The status
indicators on the second UIO-256 will indicate status of
outputs and inputs 17 to 32 and so forth as summarized
in Table 1.
11
1
1122
2
2233
3
3344
4
4455
5
5566
6
6677
7
7788
8
8899
9
990101
01
01011111
11
11112121
21
21213131
31
31314141
41
41415151
51
51516161
61
6161tupnI-tupnI-
tupnI-
tupnI-tupnI-)CDV81-5(tupnI+)CDV81-5(tupnI+
)CDV81-5(tupnI+
)CDV81-5(tupnI+)CDV81-5(tupnI+
17133945618793119215411617713919025221429 43
28143056628894110316412618714910126222420153
39153157638995111317413619715911127223421163
402632586480016112318414610816912128224422173
512733596581017113319415611817913129225423183
622834507682018114310516612818914120326424193
732935517783019115311517613819915121327425104
842046527884010216312518614810026122328426114
952147537985011217313519615811027123329421 62
0162248547096012218314510716812028124320522 72
1172349557197013219315511717813029125321523 82
2182440667298014210416512718814020226322524 92
3192541677399015211417513719815021227323525 03
4103642687490116212418514710916022228324526 13
5113743697591117213419515711917023229325527 23
6123844608692118214410616712918024220426528 33
Relay Input Numbers*
GPI Input Pin
Numbers**
5.2 UIO-256 Frame Reset
The UIO-256 firmware has been designed to detect and
recover from errors caused by such things as lost or
bad data packets. However, in the extremely unlikely
event the unit stops functioning during operation, try
pressing the reset switch on the front panel of the UIO-
256.5.3 Fuse Replacement
The fuse is accessible on the rear panel power module
of the UIO-256. Remove the power cord from the
power module and free the fuse cartridge as shown
Figure 7. Be sure
* Dependent on UIO-256 DIP switch SW1 settings for Input/Output range as summarized in Table 1.
**Inputs will sink 100 mA maximum at a maximum input voltage of +18 VDC. For operation from an external DC
voltage source, connect the external control voltage to the positive “+” input pin, and connect the external common
to the negative “-” input pin. The UIO-256 also has an internal 18 VDC source, which is available at pins 18 and 22.
Ground is available at pins 24 and 25. To use the internal 18 VDC source, ground the “-” input for the desired
control input, then use an external switch to connect from the 18 VDC internal source to the “+” input pin.
Table 3. UIO-256 GPI Input Connector (J7) Pinouts
(20 paginas)
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