Manual

Introducing Block I/O
Chapter 1
1-2
Figure 1.1
Major Features of the 1791-IOBX and -IOVX Block I/O Modules
(-IOBX shown)
DISPLAY
SELECT
INPUT
OUTPUT
POWER
ACTIVE
COMM
FUSE
RACK
ADDR
CONFIGURATION SWITCHES
1791-IOBX
128 POINT
24V DC DISTRIBUTED
I/O MODULE
GROUP No.
GROUP No.
87654321
CONFIGURATION
SWITCHES
Removable
Input Terminal
Blocks
Removable
Output Terminal
Blocks
Configuration Switches
(on top of unit)
Input/Output
Status LED
Array
Display Select
Pushbuttons
Power
, Active,
Comm and Fuse
LED Indicators
Rack Address
Switch
RIO Wiring Block
Termination
Resistor
Switch
64 24VDC SINK INPUTS
64 24VDC SOURCE OUTPUTS
+24V dc Power
Terminal Block
Removal Screws
(same on all 4
terminal blocks)
10914-I
Wiring Terminals - The remote I/O field wiring is made to 4 separate
removable 37-pin terminal blocks mounted on the sides of the module.
Terminal assignments are shown in chapter 3.
A separate nonremovable terminal block is provided for connection of the
remote I/O link and external 24V dc power supply.