FAQ

1.
Q: Why is the stat LED flashing at 4 Hz (4 flashes per seconds) after I replaced a rotary encoder in the machine? Now the controller cannot start the application.
A: Start the BOOTP/DHCP server to set the IP-Address and deactivate BOOTP.

2.
Q: Why can’t I deactivate BOOTP?
A:
Firewall must not block Port 67 and 68.
Deactivate WLAN and all other network cards.

3.
Q: How to solve Error message "Invalid identifier"?
A: Check that the major revision of the encoder uses the same number as the EDS file. Check the website.

Q: Why stat LED is flashing with 4 Hz?
A: After replacing a rotary encoder in the machine, the controller cannot start the application. Additionally, the Stat LED is flashing at 4 Hz. Start the BOOTP server to set the IP address and deactivate BOOTP as a solution.

4.
Q: Why after power-up the programmed parameters are lost?
A: Use the save command to save all programmed parameters in the non-volatile memory (NVM). Only Preset is saved automatically in the NVM.

5.
Q: Why parameters from Configuration tool like RSLogix overwrite the saved values of the encoder?
A: That is how it is supposed to work. Please refer to FAQ 8.6 to have the parameters saved on the configuration tool.

6.
Q: How many encoders can work with one Rockwell PLC?
A: One encoder represents a traffic of only 100 Ethernet packets per second. The PLCs can manage 6,000-20,000 Ethernet packets/s. Rockwell has got two tools:
EtherNet/IP Capacity Tool
Integrated Architecture Builder (overdressed for analysis)

7.
Q: Why did Rockwell PLC get error code 515 from our encoder?
A:
Check if its cable installation was done correctly.
Check if the network load is not too big. If so, you can use a Unicast instead of Multicast configuration.
If the PLC has not worked before with one of our encoders, you can download and test our sample project.

8.
Q: What is the fastest possible cycle time (RPI) on our EtherNet/IP encoder?
A: 1ms.

9.
Q: How can one set the preset value from the Control Tag Table?
A: You can download our quick start manual (under the Tool.zip folder of the product page) from our website and investigate the slides for detailed information.

10.
Q: What is the default IP address of the encoder?
A: 192.168.0.250