I/O Module Led States And Flash Patterns - Siemens TX-I/O Quick Start Manual

TX-I/O Quick Start

I/O Module LED States and Flash Patterns

20
V
19 21
(5)
(1) (2)
(1)
2 4
V
3
LED
ON
Module status
OFF
Flashing
Pulse
Dual pulse
Dual off pulse
ON
I/O status
OFF
Flashing
Pulse
Variable intensity
ON
Override
status (on
OFF
modules with
local override
Off pulse
only)
Dual off pulse
Short pulse
14
24 28 32
V
V V
23 25 27 29 31 33
(6) (7) (8)
(3) (4) (5) (6) (7) (8)
(2) (3) (4)
6 8 10 12 14 16
V V V
7 11 15
24 Vac (supply voltage) input present; fuse is intact
No 24 Vac (supply voltage) input, or fuse is blown
Fault indication
Module unconfigured, no address key
Module configured, no address key
Remote override
Binary value indication
No voltage, or binary value indication
Fault indication
Activity of field devices, or module unconfigured, no
address key
Analog value indication
Manual operation
No voltage, or manual operation off
Override action
Remote override
Output
Input
Module status LED – shows the module
status as a whole (as opposed to the I/O
points). Also used for diagnostics.
Override status LEDs – when lit, these
indicate that local override is active.
LCD display (if present)
I/O status LEDs – indicate the status of
the inputs and outputs (peripheral devices).
The LEDs are labeled with the I/O point
number. These LEDs are also used for
diagnostics.
Indication
Local override is off; operation is not possible
Operation is not possible
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