Rockwell Automation 1769-IG16 Compact TTL Input Module - Manual (Page 13)

Compact TTL Input Module 13
Publication 1769-IN079A-EN-P - May 2006
Wire the Finger-safe Terminal Block
When wiring the terminal block, keep the finger-safe cover in place.
1. Loosen the terminal screws to be wired.
2. Route the wire under the terminal pressure plate.
You can use the bare wire or a spade lug. The terminals will accept a
6.35 mm (0.25 in.) spade lug.
3. Tighten the terminal screw making sure the pressure plate secures the wire.
Recommended torque when tightening terminal screws is 0.68 Nm (6 in-lb).
Configure the 1769-IG16 Module
The following I/O memory mapping lets you configure the 1769-IG16 module.
Input Data File
For each module, slot x, word 0 in the input data file contains the state of the
module’s input points. The module implements inverted logic on the TTL inputs. A
logix low-input voltage results in the corresponding Input Data File bit being set
to 1. A logic high-input voltage results in the corresponding bit being cleared to 0.
TIP
The terminal screws are non-captive. Therefore, it is possible to use a ring lug
[max 1/4 in. o.d. with a 0.139 in. minimum i.d. (M3.5)] with the module.
TIP
If you need to remove the finger-safe cover, insert a screwdriver into one of the
square, wiring holes and gently pry the cover off. If you wire the terminal block
with the finger-safe cover removed, you will not be able to put it back on the
terminal block because the wires will be in the way.
Input Data File
Wo
rd
Bit Position
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0
r
(1)
(1)
r = read.
r r r r r r r r r r r r r r r