Index
Two-wire transmitter, Glossary-10
U
UL, Approval, 1-3
Underflow, analog input module, 4-74
Ungrounded operation, RS 485 repeater, 7-4
Use in an industrial environment, 1-5
Use in residential environments, 1-5
Use of the ET 200 / S7-300 in Zone 2, 1-17
User program, Glossary-10
parameter assignment in, A-1
V
Vibrations, 1-10
Voltage sensors, connecting, 4-50
Voltage type, SM 321; DI 16 x 24 VDC, 3-27
Index-10
W
Watchdog
SM 321; DI 16 x 24 VDC, 3-31
SM 322; DO 8 x 24 VDC/0.5 A, 3-79
Watchdog tripped, SM 338; POS-INPUT, 5-19
Wire-break, Glossary-10
Analog input module, 4-73
analog input module, 4-74
SM 322; DO 8 x 24 VDC/0.5 A, 3-76, 3-79
wire-break check, analog input module, 4-40
WR_DPARM, SFC 56, A-2
WR_PARM, SFC 55, A-2
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03