Title: +038=360.000-OU045T_03-PCD2.m4160 PLS SBC - Hardware Manual.pdf
The internal load current taken by the I/O modules from the +5V and V+ supply must not exceed the maximum supply current specified for the CPUs or LIOs (PCD2.C2000/C1000) The CPU type determines the maximum number of modules The total length of the I/O bus is limited by technical factors; the shorter, the betterWhen planning an application, we recommend the following procedure: Select the I/O modules according to your requirements.  Check that the number of module holders is allowed: PCD type PCD2.M5_Max. 1) digital I/Os PCD2 expansion 896 (-1)Max. number of I/O modules Total PCD2 expansion 56PCD2 CPUPCD2 CPU864128Total1024 (-1)1) Using digital I/O modules with 16 I/Os eachThe values in brackets have to be subtracted from the maximum number of digital I/Os because of the watchdog relay.To expand PCD2 CPUs with PCD3 RIOs, the planning instructions in the PCD3 Manual 26/789 should be followed.Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 09│2012-01-252-1