User`s manual

6
6
Chapter 6 FAQ
In this chapter, we present a short list of Questions and Answers to assist you in solving frequently
encountered problems.
Question 1
Why is SDK Manager unable to configure or start debugging the NPort PCG after searching
for the NPort over a network?
Answer 1
SDK Manager uses UDP (which broadcasts packets over the network) to search for NPort
PCGs installed on the network. The configuration and debugging functions use TCP
communication. A typical error code from SDK Manager is “timeout”, “-2”. The following
reasons could cause TCP communication in SDK Manager to fail, whereas UDP works fine.
- IP conflict
- Netmask setting
- Default gateway
The fastest solution is to reset the IP, netmask configuration to the same IP class for both PC
and NPort PCG. In this case, also remove the default gateway.
Question 2
What is the difference between “Download AP” and “Download Firmware?”
Anwer 2
1. “Download AP” is for downloading the Application Program to the NPort PCG, but
“Download Firmware” involves downloading a file that combines the Application
Program and “Kernel.”
2. The Firmware contains both the NPort PCG’s application program and kernel. This is
convenient for developers when distributing the final software package to end users.
Question 3
Why is SDK Manager unable to download an AP to the NPort PCG, and you see error code
“-5”?
Anwer 3
The error code “-5” occurs when the Private Key on the NPort PCG and the AP are
mismatched. The solution is to use SDK Manager to reset the Private Key of the NPort PCG to
correct value.