Configuration file, Program state word, Program value word – Rockwell Automation 1769-OG16 Compact TTL Output Module User Manual
Page 15
Compact TTL Output Module 15
Publication 1769-IN078A-EN-P - May 2006
Configuration File
The read/writable configuration data file allows the setup of the hold last state and
user-defined safe state conditions.
The manipulation of the bits from this file is normally done with programming
software (such as RSLogix 500 or RSNetworx for DeviceNet) during initial
configuration of the system. In that case, graphical dialogs are provided via the
programmer to simplify configuration. However, some systems (for example,
1769-ADN DeviceNet adapter) also allow the bits to be altered as part of the control
program using communication rungs. In that case, it is necessary to understand the
bit arrangement.
Program State Word
Word 1, the program state word, selects the hold
last state or user-defined safe state condition for
each individual output on a system transition
from Run to Program.
Program Value Word
(1)
The program value word, word 2, is used to
program the user-defined safe state value
(0 = Off, 1 = On). Each output is individually
configurable for on or off.
Configuration File
Wo
rd
Bit Position
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PFE
1
Program State for Output Array Word 0
2
Program Value for Output Array Word 0
3
Fault State for Output Array Word 0
4
Fault Value for Output Array Word 0
(1)
TTL outputs are inverted (On = 1 = logic low voltage = 0…0.4V dc; Off = 0 = logic high voltage = 4.5…5.5V dc). Use a NOT
instruction in the ladder program to convert to traditional True = High logic.
Condition Bit
Setting
User-defined Safe State
0
Hold Last State
1
Value
Bit Setting
Off
0
On
1