Add-On Instructions Are Custom Instructions Sets Of Logic Which Are Created By Programmer For Commonly Used Logic .Add-On Instructions Are Introduce With RSLogix 5000 Version 16. Once Defined In A Project, They Behave Similarly To The Built-In Instructions Already Available In The Logix Designer Application.

Studio 5000 Logix Emulate Contains A Virtual Chassis That Allows Configuring Emulation Modules. Studio 5000 Logix Emulate Is A Software Application That Emulates The Behavior Of Logix5000™ Controllers. Studio 5000 Logix Emulate Allows Experimentation With And The Debugging Of Application Code In A Controlled Environment Without Real Physical 5000 Controller. You Also Test HMI Application, Factory Talk View Application.

Timer And Counter Instructions Play Important Role In Industrial Automation. When Any Process Start Or Stop At Particular Time So We Use Timer. For Example If We Have A Process In Which Motor Start Every 10 Second. So Timer Play A Important Role Making Of This Type Of Instruction. Counter Counts Input Bit Up Or Down. Counter Counts When Input Bit State Change 0 To 1.

In Studio Three Type Of Timer Available In Structured Text Timer On Delay With Reset (TONR), Timer Off Delay With Reset (TOFR) And Retentive Timer On With Reset (RTOR). These Timer Unit Is 1msec. In Structured Text These Three Timer Available As Statements With Have Some Input And Output Parameter Such As Preset Value, Accumulator Value, Timer Reset Etc.