16-channel Current Input Module with Data Logger using the DCON and Modbus Protocols. The M-7017mC-16 is a 16-channel current input module that is specifi cally designed to measure current only. Its user-friendly design saves both time and effort when measuring current thanks to built-in resistors, meaning that you can now measure current directly without needing to add an external resistor. The module also provides 4 kV ESD protection and 110 VD..