TX-I/O Quick Start
I/O Module LED States and Flash Patterns
12
24
19
21
23
(5)
10762z054
V
(6)
25
(1)
V
(2)
2468
7
(1) (2) (3) (4)
32
27
29
31
(7)
V
(8)
33
(5) (6) (7) (8)
(3) (4)
10 12 14 16
V
15
20
V
28
V
V
3
V
11
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.
LED Indication
ON 24 Vac (supply voltage) input present; fuse is intact
OFF
No 24 Vac (supply voltage) input, or fuse is blown
Flashing Fault indication
Pulse Module unconfigured, no address key
Dual pulse Module configured, no address key
Module status
Dual off pulse Remote override
ON Binary value indication
OFF
No voltage, or binary value indication
Flashing Fault indication
Pulse
Activity of field devices, or module unconfigured, no
address key
I/O status
Variable intensity Analog value indication
ON Manual operation
OFF
No voltage, or manual operation off
Off pulse Override action
Dual off pulse Remote override
Output Local override is off; operation is not possible
Override
status (on
modules with
local override
only)
Short pulse
Input Operation is not possible
14 Siemens Building Technologies, Inc