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Signal type (TRA)
Description
(Signal types
designation in
other systems: see
TX-I/O assortment
overview [1])
Digital inputs
BI NO
Status indication, volt-free maintained
contact, N/O contact
BI NC
Status indication, volt-free maintained
contact, N/C contact
BI Pulse NO
Status indication,
volt-free pulsed contact, N/O
BI Push NO
Button input single / dual, N/O
BI Push NC
Button input single / dual, N/C
MI Switch
Multistate input
Count, volt-free pulse contact,
mechanical or electronic, normally open,
CI Mech (10/25Hz)
CI El (100Hz)
Electronic contact max. 100 Hz
Analog inputs
AI Pt100 4 Wire
Temperature Pt100 Ω (4-wire)
AI Pt100
Resistance 250 Ω (Pt 100)
AI 250 Ohm
Resistance 250 Ω
AI PT1K385
Temperature Pt 1000
AI PT1K375
Temperature Pt 1000
AI Ni1000 extended
Temperature LG-Ni 1000 up to 180 °C
AI Ni1000
Temperature LG-Ni 1000
AI 2500 Ohm
Resistance 2500 Ω
AI Pt1000
Resistance 2500 Ω (Pt 1000)
AI NTC10K
Temperature NTC 10 K
AI NTC100K
Temperature NTC 100 K
AI T1 (PTC)
Temperature T1 (PTC)
AI 0-10V
Voltage DC 0 .. 10V
AI 4-20mA
Current DC 4 .. 20 mA
AI 0-20mA
Current DC 0...20 mA
Digital outputs
BO Relay NO 250V
Maintained contact, relay, changeover
BO Relay NC 250V
switch, N/O, N/C contact
BO Triac NO
Maintained contact, triac, changeover
BO Triac NC
switch, N/O, N/C contact
BO Bistable NO
Maintained contact, single-pole, bistable,
BO Bistable NC
N/O, N/C contact
BO Pulse
Pulse
BO Pulse On-Off
On/off pulse (N/O and N/C contact)
MO Steps
Multistate-maintained contact
MO Pulse
Multistate pulse
BO 3-Pos Relay
Pulse, control signal, three-pos.output,
internal stroke algorithm (relay)
BO 3-PosTriac
Pulse, control signal, three-pos.output,
internal stroke algorithm (triac, AC 24 V)
BO PWM
Pulse width modulation, output AC 24 V
BO Blind Relay
Blinds control with 2/3 end switches
Analog outputs
AO 0-10V
Proportional control signal DC 0...10 V
AO 4-20mA
Proportional control signal DC 4...20 mA
Indication and local override
Local override
LCD display
Green I/O status LEDs
3-color I/O status LEDs (if supported by signal type)
Example of a read
operation
6/54
Siemens
Building Technologies
1.7
Overview of TX-I/O™ functions
The following functions are available in the TX-IO range:
max. 10 Hz, with debouncing
max. 25 Hz, with debouncing
(for 25 mA see CM10563)
The Y250T function (control signal, three-position output) uses 2 I/O points.
One TXM1.6R relay module can accommodate 3 actuators.
TX-I/O™ Module system – Functions and operation
Introduction
Max. number of functions per module
1
8
16
8
8
8
1
8
16
8
8
8
1
8
16
8
8
8
1/2
8/4 16/8
2...8
4...1 8...2
1
8
8
1
8
8
8
1
8
8
8
1
1
1
1
8
8
8
1
8
8
8
1
8
8
8
1
8
8
8
1
8
8
8
1
8
8
8
1
8
8
8
1
8
8
8
1
8
8
8
1
8
8
8
1
8
1
8
1
1
1
1
2
1...6
2...6
2
2
1
2/3
1
8
8
8
1
4
X
X
X
X
X
X
X
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
6
6
6
6
6
3
3
6...1 6...1
3...1 3...1
3
3
4/2
8
4
X
X
X
X
X
X
X
X
X
CM110561en_08
2018-10-25
8
4
8
X
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