Appendix B: Troubleshooting; Communication Troubleshooting - Siemens SITRANS LR260 Operating Instructions Manual

Appendix B: Troubleshooting

Communication Troubleshooting

Generally:
1. Check the following:
• There is power at the instrument
• The LCD shows the relevant data you are expecting
• The device can be programmed using the hand programmer
2. Verify that the wiring connections are correct.
3. Check that the device address is correctly set.
4. If you continue to experience problems, go to our website at:
. www.siemens.com/processautomation, and check the FAQs for SITRANS LR260, or
contact your local Siemens Milltronics representative.
Specifically:
1. If you try to set a SITRANS LR260 parameter via remote communications, but the
parameter remains unchanged:
• Some parameters can only be changed when the device is not scanning. Try
putting the device in PROGRAM mode using the operating mode function.
• Try setting the parameter from the keypad. (First make sure that the lock
parameter [6.1] is set to the unlock value.)
• The communications control parameter 5.2 must be set to Read/Write to allow
you to write parameters to SITRANS LR260.
2. If you see unanticipated displays, for example:
• PROGRAM mode displayed instead of Measurement mode
• the wrong parameter displayed in response to a command
• a parameter displayed in response to no command
make sure no infrared-capable device is close to SITRANS LR260. Any device with
infrared capabilities (laptops, cell phones, PDAs) can cause interference which
simulates a command to the SITRANS LR260, potentially causing it to switch modes
or to change a parameter.
3. If the operation is erratic, make sure the Hand Programmer is not being used at the
same time as SIMATIC PDM.
7ML19985KE02 SITRANS LR260 (HART) – INSTRUCTION MANUAL Page 83