Plc Viewer is the easiest way to monitor variables from programmable logic controllers (PLC) in real time.

Variables appear in pages as custom list.

Supports most PLCs, Omron cs / cj / cp with ETN module Siemens 1200 direct. Any plc that supports
Drivers Emerson Control Techniques (Unidrive, Commander etc...).
Modbus protocol.
Display types: Boolean, Int16, Int32, UInt16, UInt32, Hex16, HEX32.
Interact with multiple PLCs simultaneously.
No intermediate servers or equipment needs, only network.
High speed communication with high-performance drivers.

* New versions of plcs In 1200 Siemens ON TIA portal you need to do. Go to PLC Properties. Need check the option > Connection mechanisms: Permit with PUT/GET communication from remote partner (PLC, HMI, OPC...). If you are working with DB data blocks, you need turn of Optimized block access. Than you will get addresses of data.