Thermocouples to resistance thermometers
U
UC
Meaning, 438
UCM
Meaning, 438
UH
Meaning, 439
Uiso
Meaning, 439
Underflow
Ungrounded operation
UR1
Specifications, 30
UR2
Specifications, 30
UR2-H
Specifications, 32
User program
USR
Meaning, 439
V
Vibrations, 24
Voltage sensors
Vs
Vs Sensor supply
W
Wire break
Wire break monitoring
Digital output module, 88
SM 431, AI 16 x 16 Bit, 291
Wiring
24 VDC fan subassembly, 384
Wiring and block diagrams
SM 421, DI 16 x UC 120/230 V, 120
Wiring diagram
SM 422, DO 16 x AC 20-120 V/2 A, 154
SM 422, DO 16 x DC 20-125 V/1.5 A, 133
WR_DPARM
WR_PARM
Index
S7-400 Automation System Module Data
472
Reference Manual, Ausgabe 11/2016, A5E00850736-08