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Siemens
TX-I/O™ Module system – Functions and operation
CM110561en_08
Building Technologies
Introduction
2018-10-25
1.7 Overview of TX-I/O™ functions
The following functions are available in the TX-IO range:
Signal type (TRA)
Description
N
um
be
r o
f
I/O
p
oi
nts
pe
r fu
nc
tion
Max. number of functions per module
(Signal types
designation in
other systems: see
TX-I/O assortment
overview [1])
TX
M
1.8D
TX
M
1.16D
TX
M
1.8U
TX
M
1.8U
-ML
TX
M
1.8X
TX
M
1.8X
-ML
TX
M
1.8P
TX
M
1.6R
TX
M
1.6R
-M
TX
M
1.6R
L
TX
M
1.8RB
TX
M
1.8T
Digital inputs
BI NO
Status indication, volt-free maintained
contact, N/O contact
1
8
16 8 8 8 8
BI NC
Status indication, volt-free maintained
contact, N/C contact
1
8
16 8 8 8 8
BI Pulse NO
Status indication,
volt-free pulsed contact,
N/O
1
8
16 8 8 8 8
BI Push NO
BI Push NC
Button input single / dual, N/O
Button input single / dual, N/C
1/2
8/4 16/8
MI Switch
Multistate input
2...8 4...1 8...2
CI Mech (10/25Hz)
Count, volt-free pulse contact,
mechanical or electronic, normally open,
max. 10 Hz, with debouncing
max. 25 Hz, with debouncing
1
1
8
8
8
8
8
8
CI El (100Hz)
Electronic contact max. 100 Hz
1
8 8 8 8
Analog inputs
AI Pt100 4 Wire
Temperature Pt100
Ω
(4-wire)
1
8
AI Pt100
Resistance 250 Ω (Pt 100)
1
8
AI 250 Ohm
Resistance 250 Ω
1
8
AI PT1K385
Temperature Pt 1000
1
8 8 8 8 8
AI PT1K375
Temperature Pt 1000
1
8 8 8 8 8
AI Ni1000 extended Temperature LG-Ni 1000 up to 180 °C
1
8 8 8 8 8
AI Ni1000
Temperature LG-Ni 1000
1
8 8 8 8 8
AI 2500 Ohm
Resistance 2500 Ω
1
8 8 8 8 8
AI Pt1000
Resistance 2500 Ω (Pt 1000)
1
8 8 8 8 8
AI NTC10K
Temperature NTC 10 K
1
8 8 8 8
AI NTC100K
Temperature NTC 100 K
1
8 8 8 8
AI T1 (PTC)
Temperature T1 (PTC)
1
8 8 8 8
AI 0-10V
Voltage DC 0 .. 10V
1
8 8 8 8
AI 4-20mA
Current DC 4 .. 20 mA
1
8 8
AI 0-20mA
Current
DC 0…20 mA
(for 25 mA see CM10563)
1
8 8
Digital outputs
BO Relay NO 250V
BO Relay NC 250V
Maintained contact, relay, changeover
switch, N/O, N/C contact
1
6
6
BO Triac NO
BO Triac NC
Maintained contact, triac, changeover
switch, N/O, N/C contact
1
8
BO Bistable NO
BO Bistable NC
Maintained contact, single-pole, bistable,
N/O, N/C contact
1
6
BO Pulse
Pulse
1
6
6
BO Pulse On-Off
On/off pulse (N/O and N/C contact)
2
3
3
MO Steps
Multistate-maintained contact
1…6
6…1 6…1
MO Pulse
Multistate pulse
2…6
3…1 3…1
BO 3-Pos Relay
Pulse, control signal, three-pos.output,
internal stroke algorithm (relay)
2
3
3
BO 3-PosTriac
Pulse, control signal, three-pos.output,
internal stroke algorithm (triac, AC 24 V)
2
4
BO PWM
Pulse width modulation, output AC 24 V
1
8
BO Blind Relay
Blinds control with 2/3 end switches
2/3
4/2
Analog outputs
AO 0-10V
Proportional control signal DC 0...10 V
1
8 8 8 8
AO 4-20mA
Proportional control signal DC 4…20 mA
1
4 4
Indication and local override
Local override
X X
X
LCD display
X X
Green I/O status LEDs
X X X X X X X
X
X
X
3-color I/O status LEDs (if supported by signal type)
X
X
The Y250T function (control signal, three-position output) uses 2 I/O points.
One TXM1.6R relay module can accommodate 3 actuators.
Example of a read
operation