4 digital i/o, 4 installing option cards, Digital i/o – Rice Lake 820i Programmable Indicator/Controller - Installation Manual User Manual

Page 12: Installing option cards

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8

820i

Installation Manual

Port 3 uses connector J1 to support USB, Ethernet,

and fiber-optic interface cards.

Note

Installation of option cards in connector J1

requires removal of the J1/J10 port

selection jumper (see Figure 2-3 on

page 9). Removing the jumper disables RS-232

communications through connector J10. For the USB

interface card only, connections for simultaneous

R S - 2 3 2 ( c o n f i g u r e d a s P o r t 3 ) a n d U S B

communications (Port 2) are provided on the USB

interface card.
See the communications interface card installation

instructions for more information.

2.3.4

Digital I/O

Digital inputs can be set to provide many indicator

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.
Table

2-3 shows the pin assignments for connector J5.

Table 2-3. J5 Pin Assignments (Digital I/O)

J5 Pin

J5 Signal

1

+5 VDC

2

GND

3

DIO 1

4

DIO 2

5

DIO 3

6

DIO 4

7

DIO 5

8

DIO 6

9

DIO 7

10

DIO 8

Digital inputs and outputs are configured using the

DIG I/O menu. See Section 3.2.7 on page 44 for

configuration information.
An optional 24-channel digital I/O expansion card,

PN 67601, is available for applications requiring more

digital I/O channels.

Note

Digital I/O points can be configured to

count active pulse inputs by setting them to

PROGIN (DIGIN menu) and using the

iRite-IDE

DigInSsBbActivate handler with a timer to

turn the handler on and off. However, the fastest pulse

rate that can be counted using a digital input is 10Hz

(10 pulses per second). More demanding applications

can use the pulse input option card (PN 67603) to

count pulses in the 4–4000Hz range.

2.4

Installing Option Cards

Each option card is shipped with installation

instructions specific to that card. The general

procedure for all option cards is as follows:

Caution

Option cards are not hot-pluggable.
Disconnect power to the

820i

before

installing option cards.

1. Disconnect power to the indicator. Remove

backplate as described in Section

2.2 on page

6.

2. Carefully align the large option card connector

with connector J6 on the CPU board (see

Figure 2-3 on page 9) or J1. Press down to seat

the option card in the CPU board connector.

3. Use the screws provided in the option kit to

secure the other end of the option card to the

threaded standoffs on the CPU board (see

Figure

2-3).

4. Make connections to the option card as required.

Use cable ties to secure loose cables inside the

enclosure. When installation is complete,

reassemble the enclosure as described in

Section

2.6 on page

10.

The

820i

automatically recognizes all installed option

c a r d s w h e n t h e u n i t i s p o w e r e d o n . N o

hardware-specific configuration is required to identify

the newly-installed card to the system.

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