Appendix Bdip Switch Settings; Dip Switch Access; Figure 54: Dip Switches - ABB 266 MODBUS User Manual

Appendix B DIP switch settings
The following information details the functions of the DIP switch settings within the transmitter. The unit has six DIP switches
mounted on the electronics module. DIP switches 1, 2, 3, 4, and 5 are the only active switches. Switches are ON in the up position
and OFF in the down position (Figure 54). By default, all DIP switches are set to the OFF position.
When power is applied to the transmitter, the application software checks for the states of DIP switches 1, 2, 3, 4, and 5 on the
electronics module. The configuration of the switch settings defines what action, if any, is taken.
The state of switch 5 may be set before or after power is applied and also at any time during operation. This alternate functionality
allows the unit to be moved into write-protect mode while still operating.
IMPORTANT NOTES: DIP switch 6 is not connected.
Always disconnect the transmitter from the power supply before making changes to DIP switches 1 through 4.
The transmitter must then be restarted in order for the new configurations to be loaded.
B.1

DIP switch access

Use the following steps to access the DIP switches through the front of the transmitter:
1. Disconnect power to the transmitter if necessary. (Altering switches 1 through 4 requires the power to be disconnected.)
2. Locate the security screw in the housing and, using the provided Allen wrench, turn it clockwise until flush with the housing.
3. Unscrew the housing cover and remove to expose the electronics.
4. Use a slotted screwdriver to press the tabs on the LCD fixing locks to release the assembly and remove it. For additional
information about removing the LCD assembly, go to section 5.4, Replacing the LCD assembly.
84 | 266 MODBUS® multivariable transmitter User manual 2105216 Rev. AB

Figure 54: DIP switches

Appendix B DIP switch settings