Siemens SIMATIC S7-400 Reference Manual page 459
Automation system module
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SM 431, AI 8 x RTD x 16 bit, 422
SM 431, AI 16 x 16 Bit, 420
SM 431, AI 8 x 16 Bit, 425
Diagnostic data entry, 194
Diagnostic interrupt
Analog input module, 201
Analog modules, 227
Digital modules, 93
Diagnostic message, 90
Channel error, 90
Channel information available, 90
EPROM error, 90
External auxiliary voltage missing, 90
External error, 90
Front connector missing, 90
Fuse blown, 90
Hardware interrupt lost, 90
Incorrect parameters, 90
Internal error, 90
Internal voltage failure, 90
Load voltage L+ missing, 90
Module error, 90
No module parameters, 90
Parameter assignment error, 90
Sensor supply missing, 90
Short-circuit to L+, 90
Short-circuit to M, 90
Wire break, 90
Diagnostic messages, 89, 223
Analog input modules:, 223
Digital modules, 90
Reading, 89, 223
Diagnostics
Analog input module, 201
Analog modules, 223
Digital input module, 87
Digital output module, 88
for digital modules, 88
Diagnostics interrupt enable
Digital input module, 87
Digital output module, 88
Digital input module
Diagnostic data, 407
Diagnostics, 87
Diagnostics interrupt enable, 87
Hardware interrupt enable, 87
Input delay, 87
Keep last value, 87
Load voltage L+ missing, 87
Parameters, 87, 397
Sensor supply missing, 87
SM 421, DI 16 x 24 V DC, 100
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08
SM 421, DI 16 x AC 120 V, 109
SM 421, DI 16 x UC 120/230 V, 119, 122
SM 421, DI 16 x UC 24/60 V, 112
SM 421, DI 32 x 24 V DC, 97
SM 421, DI 32 x UC 120 V, 126
Structure of data record 1, 397
Substitute a value, 87
Substitute a value "1", 87
Wire break monitoring, 87
Digital input modules
Features, 83
Digital module
Auxiliary voltage missing, 91
Causes of error and remedies, 91
Channel error, 91
Channel information available, 91
Commissioning steps, 85
Diagnostic messages, 90
Diagnostics, 88
EPROM error, 91
External error, 91
EXTF LED, 89
Front connector missing, 91
Fuse blown, 92
Hardware interrupt, 93
Hardware interrupt lost, 91, 94
Incorrect parameters, 91
Internal error, 91
Internal voltage failure, 91
Interrupt, 93
interrupt-triggering channels, 94
INTF LED, 89
Load voltage L+ missing, 92
Module error, 91
No parameters, 91
Parameter assignment, 85
Parameter assignment error, 91
Sensor supply missing, 92
Short-circuit to L+, 91
Short-circuit to M, 91
STOP mode, 91
Wire break, 92
Digital output module
Destination CPU for interrupt, 88
Diagnostic data, 412
Diagnostics, 88
Diagnostics interrupt enable, 88
Fuse blown, 88
Keep last value, 88
Load voltage L+ missing, 88
Parameters, 88, 400
Short-circuit to L+, 88
Index
459
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