Rice Lake BCi Belt Scale - Installation & Operation Manual Version 2.00 - Manual (Page 38)

32 BCi Installation & Operation Manual
Digital I/O
Digital inputs can be set to provide many integrator functions, including all keypad functions. Digital inputs are
active low (0 VDC), inactive high (5 VDC).
Digital outputs are typically used to control relays that drive other equipment. Outputs are designed to sink,
rather than source, switching current. Each output is a normally open collector circuit, capable of sinking 24 mA
when active. Digital outputs are wired to switch relays when the digital output is active (low, 0 VDC) with
reference to a 5 VDC supply.
The table below shows the pin assignments for connector J2.
Digital inputs and outputs are configured using the DIG I/O menu.
An optional 24-channel digital I/O expansion card, PN 67601, is available for applications requiring more digital
I/O channels.
• The maximum number of option board slots is fourteen: two onboard slots, plus two six-card expansion
boards.
• The two-card expansion board is always placed at the end of the expansion bus. No more than one
two-card expansion board can be used in any system configuration.
• The panel mount enclosure can accommodate a single two-card expansion board.
• The wall mount enclosure can accommodate a two-card or a six-card expansion board.
• Systems using two expansion boards are housed in a custom enclosure.
3.3 Enclosure Reassembly
Once cabling is complete, position the backplate over the enclosure and reinstall the backplate screws. Use the
torque pattern shown below to prevent distorting the backplate gasket. Torque screws to 15 in-lb (1.7 N-m).
Figure 3-8. BCi Enclosure Backplate
J2 Pin J2 Signal
1 +5 VDC
2 GND
3 DIO 1
4 DIO 2
5 DIO 3
6 DIO 4
Table 3-5. J2 Pin Assignments (Digital I/O)
Note





 











5PSRVF
CBDLQMBUF
TDSFXT
UP

JOMC

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