TX-I/O Modules
Digital Input Grounding Connections
The neutral of a digital input (on Digital Input, Universal and Super Universal modules)
can be connected to any neutral terminal on the same module. Several digital inputs
can also share a neutral terminal on the same module.
Technical Data
Digital inputs are not electrically separated from the system electronics.
Mechanical contacts must be volt-free.
Contact sensing voltage 21.5 to 25 Vdc
Contact sensing current 1.6 mA (initial current 10 mA)
Contact resistance with contacts closed Max. 200Ω
Insulation resistance with contacts open Max. 50KΩ
Min. closing / opening
time [ms] including
bouncing
Max. bounce time
[ms]
Max. Counting
frequency
(symmetric)
Maintained contact 80 40
Pulse contact 50 30
Counter
1)
40 30 10 Hz
1)
Counting function for TXM1.16D is on I/O points 1 through 8 only.
Digital Output Modules (TXM1.6R and TXM1.6R-M)
TXIO0018R1
TXM1.6R
24V ...250V
2
3915
19 21 25 27 31 33
(1) (2) (3) (4) (5) (6)
(4) (5) (6)
4
(1)
810
(2)
14
20 26 32
16
(3)
TXIO0021R1
TXM1.6R-M
2
3 9 15
19 21 25 27 31 33
(4) (5) (6)
(1) (2) (3) (4) (5) (6)
4
(1)
8 10
(2)
14
20 26 32
16
(3)
24V ...250V
+
The TXM1.6R and TXM1.6R-M Digital Output modules provide six NO or NC (form C),
maintained or pulsed, voltage free/dry contacts.
18
Siemens Industry, Inc. TALON TX-I/O Modules and Island Bus Technical Reference
588-587 CONFIDENTIAL: For internal use only 4/6/2010
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