9
Siemens Schweiz AG
A6V11646018_en--_e
Smart Infrastructure
2021-06-11
I/O modules TXM interface
Nominal voltage
DC 24 V
Power supply for I/O modules TXM
Max. 300 mA
Parallel switchable with 24VDC Supply TXS1.12F4
For details, see: TX-I/O engineering and installation,
CM110562
Protection
Short-circuit proof
Connector for I/O modules TXM on the side: No
protection against faulty wiring with AC 24 V
No electrical protection.
Use the cover
On PXC4.E16
Modbus RTU interface
Interface type
EIA-485, electrically isolated
Baud rate
1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
(depending on the configuration)
Internal bus termination
120 Ohm, switchable with DIP switch
Internal bus polarization
270 Ohm pull-up/pull-down resistances, switchable with
DIP switch
Cabling (in-house cabling only)
Cable length
3-wire cable
Max. 1000 m (3300 ft)
Protection
Short-circuit proof
Protection against faulty wiring with AC 24 V
Inputs
12 universal inputs U1...U12 with the following functions
Temperature measurement, analog
Type
Range (over range)
Resolution
AI NTC10K
-40...115 °C (-52.5...155 °C)
-48...239 °F (-62.5...311 °F)
10 mK (25 °C)
0.018 °F
AI NTC100K
-40...125 °C (-52.5...155 °C)
-48...257 °F (-62.5...311 °F)
AI PT1K 385 (EU) *)
-50...600 °C (-52.5...610 °C)
-58...1112 °F (-62.5...1130 °F)
20 mK
0.036 °F
AI PT1K 375 (NA) *)
-50...180 °C (-52.5...185 °C)
-58...356 °F (-62.5...365 °F)
10 mK
0.018 °F
AI (LG-)Ni1000 *)
AI 2x (LG-)Ni1000 *)
Resistance sensor, analog
Type
Range (over range)
Resolution
AI 1000 Ohm *)
0...1000 Ω (0...1050 Ω)
0.1 Ω
AI 2500 Ohm *)
0...2500 Ω (0...2650 Ω)
0.1 Ω
AI Pt1000 *)
0...2500 Ω (0...2650 Ω)
0.1 Ω
AI 1000-1175 Ohm *) for setpoint shift
1000...1175 Ω (900...1295 Ω)
0.1 Ω
*) A fixed value of 1 Ω is calibrated to correct line resistance.
Voltage measurement, analog
Type
Range (over range)
Resolution
AI 0...10 V
0...10 V (-1.5...11.5 V)
1 mV
AI 0...10 V standard
0...100% (-10...110%)
0.01%
Open connection: Negative voltage -1.5 V (line failure detection)
