Screw terminal (Digital connec ons)
Connect up to four digital I/O lines (DIO0 to DI03) to the detachable screw terminal.
Figure 4. Screw terminal pinout
The digital ground (GND) terminals provide a common ground for the digital bits.
The digital I/O lines are electrically isolated from the analog circuits. Each bit is individually configurable for
input or output, and features Schmi trigger inputs and open drain outputs. All DIO channels are pulled high to
5 V.
Any digital bit can be configured with the web interface as a trigger to start or stop an acquisi on, to trigger an
alarm and be driven high or low when an alarm or occurs, or be driven high or low when an event condi on
occurs.
Spring terminal (Analog connec ons)
Connect up to 16 thermocouple or voltage inputs (TC0+/TC0– to TC15+/TC15–) and two common reference
connec ons (COM) to the 36-posi on detachable spring terminal.
Cau on! We strongly recommend that you ground yourself using a wrist strap before handling
thermocouple sensors.
Figure 5. Spring terminal pinout
WebDAQ 316 User's Guide
page 10