1769-ob8 configuration file, Program to fault enable bit (pfe), word 0 bit 0, Program state, word 1 – Rockwell Automation 1769-OB8 Compact Solid State 24V dc Source, High Current Output Module User Manual
Page 13: Program value, word 2
Compact™ Solid State 24V dc Source, High Current Output Module 13
Publication 1769-IN063A-EN-P - March 2003
1769-OB8 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 (e.g. RSLogix 500, RSNetWorx for DeviceNet, etc.) during initial
configuration of the system. In that case, graphical screens are provided via the
programmer to simplify configuration. However, some systems (e.g. 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 to Fault Enable Bit (PFE), Word 0 Bit 0
Allows the selection of which data value, the
program or fault value, to apply to the output if a
system in Program mode undergoes a system
fault, resulting a change to Fault mode.
Program State, Word 1
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 2
Defines the user-defined safe state value (0=Off,
1=On). Each output is individually configurable
for on or off.
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
0
0
0
0
0
0
0
0
Program State for Output Array Word 0
2
0
0
0
0
0
0
0
0
Program Value for Output Array Word 0
3
0
0
0
0
0
0
0
0
Fault State for Output Array Word 0
4
0
0
0
0
0
0
0
0
Fault Value for Output Array Word 0
Value Applied
Bit Setting
Program
0
Fault
1
Condition Bit
Setting
User-defined Safe State
0
Hold Last State
1
Value
Bit Setting
Off
0
On
1