PPC-2000 Frequently Asked Questions
	What do you mean by "PID control just got logical"? What is the difference between the PPC-2000 and a PLC? What human machine interface (HMI) accessories to the PPC-2000 does Watlow provide? How do I add custom functions to the PPC-2000? How can the PPC-2000 interface with my existing control system? What are some productivity tools the PPC-2000 system offers? What do I need to do to set up a PID loop?
Q	What do you mean by "PID control just got logical"?
A	With the PPC-2000, Watlow has introduced a new class of controller. The programmable process controller starts with a full-function, multi-channel closed-loop, PID controller and opens the door for users to add their own logic programs. Programs can adjust closed-loop control parameters, respond to PID control events and perform sequential functions. In essence, the PPC-2000 is a process controller that you can customize.
Q	What is the difference between the PPC-2000 and a PLC?
A	The PPC-2000 is a multi-loop PID controller. No programming is required to use its full complement of closed-loop control features. PLCs offer minimal support for PID control and always require programming. While the PPC-2000 frees you from reinventing PID in your program, it still offers the flexible features of a PLC. Custom functionality can be programmed with ladder logic. And the I/O can be expanded by adding modules.
Q	What human machine interface (HMI) accessories to the PPC-2000 does Watlow provide?
A	The Configurator Edition of ANAWIN®3 HMI software is included with each system. This Windows-based package can be used to set up the PPC-2000 system. The Runtime and Developer Editions provide additional features including data logging, alarm management and graphing. The Developer Edition allows you to create custom screens specific to your application.
Q	How do I add custom functions to the PPC-2000?
A	Using the PPC-2000's programming utility, LOGICPRO, you create, test and install a program in the PPC-2000. Edit programs in ladder diagram, sequential function chart and/or function block diagram in the graphical programming environment. Use the simulation feature to test your program before downloading it. Finally, use LOGICPRO to record the program in flash memory and verify your program's operation. Once installed, your logic program and the closed-loop control program operate in tandem.
Q	How can the PPC-2000 interface with my existing control system?
A	The PPC-2000 uses the ModbusTM RTU protocol, which is supported by hundreds of operator interface panels, protocol converters, human machine interface software packages and communications driver kits. Descrete I/O signals can pass information to and from controllers not equipped for communications.
Q	What are some productivity tools the PPC-2000 system offers?
A	Among others: Firmware based autotuning quickly optimizes your process. Recipe management helps you insure that controller parameters are set correctly. Calendar recipe download enables you to program changes to controller parameters. Custom screens present information to users in a way that makes sense to them and minimizes operator errors. Logic simulation allows you to test programs without taking up valuable system time.
Q	What do I need to do to set up a PID loop?
A	Connecta thermocouple or other sensor to an analog input. Wire the output device to a digital output. Supply power to the system. Specify the sensor that is used for feedback. Specify the output that is used for control. Autotune the loop. Graph the results.

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