7.2. Appendix B – I/O Card (2 x Digital Input, 2 x Relay Output)The I/O card serves for detecting two digital input signals (e.g. production/standstill) and forswitching two voltages. The electrically isolated inputs are suitable for nominal voltages ofup to 32V DC. Always two adjacent channels share a reference. Thus, signals of other de-vices can be connected without causing compensation currents on the ground line. ThePhotoMos relay outputs can switch currents of up to 250 mA. The Vario 10 can be equippedwith two of these I/O cards at most, so that four digital inputs and four relay outputs areavailable.Internally, both I/O cards are directly connected to the chip set, so that they can be oper-ated via the application program with the help of an attached ismm.dll (CD directory "..\IPCOptionen und Zubehör \IO-Karte\iSMM SDK v1.2"). For a simple function control of theinputs and outputs, the pre-installed program iSMM (intelligent System Management Moni-tor) can be used. Note:If the IPC is signed in at a network domain, the user signed in must have local administra-tor rights in order that the I/O card works properly using the ismm.dll. The same appliesfor the program iSMM.The interfaces for the inputs and outputs are on separate terminal strips.Pin Assignment of Digital InputsPIN Designation Meaning Spg I/O1 I/O21 V12 12V Output (max. 0.1A) X2 GND Device ground X3 DIN1 Input 1 X4 DIN2 Input 2 X5 G12 Ref. for input 1 and 2 X X6 DIN3 Input 3 X7 DIN4 Input 4 X8 G34 Ref. for input 3 and 4 X XPin Assignment of Relay OutputsPIN Designation Meaning Spg I/O1 I/O21 R1A Output 1 X2 R1B Ref. for output 1 X3 R2A Output 2 X4 R2B Ref. for output 2 X5 R3A Output 3 X6 R3B Ref. for output 3 X7 R4A Output 4 X8 R4B Ref. for output 4 XManual Datafox IPC Vario 10 Page 22 date: 07.02.2013 Version: 01.00.03