Instruction Manual

310 Publication 1753-UM001C-EN-P - March 2010
Appendix B System Signal Variables
AI[0x].State
(1)
Read Error mask for analog input channels
0x00 No error detected
0x01 Error in analog input channel
0x02 Invalid measurement values
0x04 A/D converters faulty
0x08 Measurement values are not within the safety accuracy
0x10 Measurement value overflow
0x20 Channel not in use
0x40 Addressing error of the two A/D converters
AI[0x].Used Write Configuration of analog input channel
0 not used
1used
AI[0x].Value
(1)
Read Analog value of input channel (WORD)
-10V…10V = -1000…1000
Board.SRS Read System.Rack.Slot
Board.Type Read Module type
0xFD02 analog input module for GuardPLC 2000 controller
0xFFFF missing module in GuardPLC 2000 chassis
Board.State Read Error mask for the module
0x000 I/O processing may be running with errors
0x001 No I/O processing (CPU not in RUN)
0x002 No I/O processing during start-up tests
0x004 Manufacturing interface running
0x010 No I/O processing due to faulty parameterization
0x020 No I/O processing due to exceeded fault rate
0x040 No I/O processing because configured module is not plugged in
(1) 0x = input channel 01…08.
I/O Data Read/Write Description