ModTCPSimX : Modbus Simulator 

This Android application is a Simulator for Modbus TCP Server.
we can :
+ Add Multiple Slaves
+ Editable Port
+ Read Registers Values
+ Write Registers Values
+ Holding Registers
+ Input Registers
+ Digital Inputs
+ Coil Outputs
+ Set Tag Name/Description
+ Add to Monitoring Tags
Important Note: use PORT number above 1024, the default is 5502.
Available on Google Play:
play.google.co...