104 Commissioning WAGO-I/O-SYSTEM 750750-666/000-003 4FDI/2FDO 24V/10A PROFIsafe V2 iParManualVersion 1.2.0, valid from HW/SW Version 01/01Table 29: Error detectionError, example(x = 1 ... 4, m = 1.2)Error detectionShort circuit test"active"Short circuit test"not active"Short circuit I1 / I2 Yes NoShort circuit I3 / I4 Yes NoShort circuit Ix / +24 V Yes NoShort circuit Ix / GND No NoShort circuit Tm / +24 V Yes* NoShort circuit Tm / GND Yes YesShort circuit T1 / T2 Yes* NoInternal error in input circuit Yes YesNo supply voltage Yes Yes* Only if the clock outputs are connected tothe digital inputs.Behavior of the PROFIsafe I/O module in the event of a failureIf an error is detected on a digital input or power output by the PROFIsafe I/Omodule, the entire PROFIsafe I/O module is passivated by the process image ofall digital inputs being set to "0" and all digital power outputs being switched off.For detailed information, read the section "Diagnostics".7.4.5.3 Parameter Dual Channel Evaluation Ix & Ix+1The Dual channel evaluation parameter is used to switch the dual channelevaluation of the digital inputs on or off. The value of the parameter can be set to"yes" or "no". If you have set the value of the operating mode parameter to"Rotary table, you must set the Dual channel evaluation parameter to "no".Depending on the value of the Dual channel evaluation parameter, the signalstates of the Ix and Ix+1 inputs are analyzed differently (normal, dual channel),reproduced in the process image and transferred to the safe PLC.If you have set the Dual channel evaluation parameter to "no", then the signalstates of the digital inputs are transmitted independently, i.e., single-channelwithout analysis to the safe PLC (see Process Image section).If have you set the Dual channel evaluation parameter to "yes", the respectivedigital inputs Ix and Ix+1 are combined into an input pair by the PROFIsafe I/Omodule. The signal states of the digital inputs are analyzed based on the rule setusing the Valence evaluation parameter and applied to the process image as 0signal or 1 signal (see Valence Evaluation Parameter section).The PROFIsafe I/O module can be used to create two input pairs from the fourdigital inputs.
