Owner manual

GPIO Hardware Reference Indicators
CTI Products, Inc.
4. Indicators
4.1 Input and Output LEDs
The GPIO has LEDs to display the status of all installed inputs and outputs.
Status LEDs for inputs are green. Status LEDs for outputs are red. The following
shows a GPIO module configured with 12 inputs (on the left) and eight outputs
(on the right). LEDs will be lit when the input or output is active.
J1
E1 A
E1 B
GPIO-1208 Module
8 9
7 A
B
C
D
E
F
0 1
2
3
4
5
6
8 9
7 A
B
C
D
E
F
0 1
2
3
4
5
6
8 9
7 A
B
C
D
E
F
0 1
2
3
4
5
6
1 2 34 ON
PWR ACT
A
11 1210987654321
RESETDC IN OPTIONMODULEGROUP IN OUTNETWORK
SVC ERR
B
123456789101112
Front View
Rear View
CA-80851-100
Output LEDs
Input LEDs
Figure 4 – Location of Indicators and Setup Switches
4.2 PWR, ERR, ACT LEDs
The GPIO has three additional LED indicators on the front panel.
PWR Continuously lit: Sufficient power is present.
Blinking: Voltage is low.
ERR 1 Blink: Group:Module set to FF:F (Invalid address)
Continuously lit: Other error (hardware or software)
ACT Lit: Connected to a PC running MCNRCD software
68-12068-100
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