Instruction Manual

Publication 1753-UM001C-EN-P - March 2010 329
System Signal Variables Appendix B
AI[xx].Error Code
DI[xx].Error Code
Read
Read
Error mask for analog input channels (1…8)
Error mask for digital input channels (9…32)
0x01 Error in input module
0x02 Measured values invalid
0x04 A/D converter faulty
0x08 Measured value not within the safety accuracy
0x10 Measured value overflow
0x20 Channel not in operation
0x40 Address error of both A/D converters
0x80 Configuration of hysteresis faulty
AI[xx].Value Analog
DI[xx].Value Analog
Read
Read
Analog value of AI channels (1…8) [WORD] from 0…1000
The validity is dependent on the error mask.
Analog value of the DI channels (9…32) [WORD] from 0…3000
The validity is dependent on the error mask.
DI[xx].Value Bool Read Digital value of DI channels (9…32) [BOOL] according to hysteresis
The validity is dependent on the error mask.
AI[xx].Hysteresis LOW Write Upper limit of the 0-signal voltage range DI[xx].Value Bool
AI[xx].Hysteresis HIGH Write Lower limit of the 1-signal voltage range DI[xx].Value Bool
AI[xx].Used
DI[xx].Used
Write
Write
Configuration for indicating utilization of channels 1…8
Configuration for indicating utilization of channels 9…32
I/O Data Read/Write Description