IBM 243X user manual Problems Communicating With RF Network Devices, 4-11, Solution

Troubleshooting and Maintaining the Terminal 4

Problems Communicating With RF Network Devices

If the 2435 is not communicating with other devices in the RF network, check these possible problems.

Problem

When you turn on the terminal after it was suspended for 10-15 minutes or longer, the terminal can no longer send or receive messages over the network.

The Network Connect icon is off. The 2435 is not communicating with the access point.

The Network Connect icon blinks on the terminal screen.

Solution

The host may have deactivated or lost your current terminal emulation session. In a TCP/IP direct connect network, you need to turn off the “Keep Alive” message (if possible) from the host so that the TCP session is maintained while a terminal is suspended.

Make sure the access point is turned on and operating. You may also be using the terminal out of range of an access point. Try moving closer to an access point to re-establish communications.

Make sure the Network Activate command is enabled. For help, see “Network Activate” in Chapter 6 of the 2400 Family system manual.

Make sure the 2435 is configured correctly for your network. In an OpenAir network, the domain and the security ID on the terminal must match the values set for all access points the terminal may communicate with. In an 802.11b network, the network name on the terminal must match the values set for all access points the terminal may communicate with. For help, see “Using RF Communications on the Terminal” in Chapter 3.

In a TCP/IP direct connect network, you cannot scan or enter data when the 2435 is not communicating with an access point or you may lose your TCP session.

If you are within range of an access point, the Network Activate command is enabled, and the Network Connect icon is still off, you may have a defective radio card. For help, contact your local Intermec service representative.

In a UDP Plus network, the terminal is communicating with an access point, but it is not connected to the DCS 30X. You may need to check the 2435 configuration or make sure the DCS 30X is running and that data collection is started.

The 2435 may be out of range of an access point or the access point may have recently been turned off. Make sure the access point is still turned on and the 2435 is with in range.

Each device in the network must have a valid IP address. The IP addresses set on the terminal must match the addresses configured on the DCS 30X or host. For help, see “Using RF Communications on the Terminal” in Chapter 3.

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