The ABB pluto A20 v2 programmable safety controller (safety PLC) comes with pluto safety bus. It has totally 20 I/O: 8 failsafe inputs, 8 non-failsafe outputs/failsafe inputs, 2 individually failsafe relay outputs and 2 individually failsafe transistor outputs. The current monitoring is available on Q16 and Q17.
Protocol type is MODBUS ASCII, pluto safety Bus, statusBus Rated control supply voltage of 24 VDC