Depending on the selected interface, the serial data interface timing is as follows:
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Interfaces RS-232, RS-485, RS-422: The figure below shows timing when WMT700 is polled in the measurement mode.
Figure 1. Timing for RS-232, RS-485, and RS-422 interfaces 
The response delay t2 is user-configurable. In the configuration mode, some commands have a longer response delay.
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SDI-12 interface: The timing is compliant with the SDI-12 standard. For the complete SDI-12 standard text, see www.sdi-12.org.