Rockwell-automation 1769-OG16 Compact TTL Output Module Manual de usuario descargar pdf (Pagina 16)

16 Compact TTL Output Module

Publication 1769-IN078A-EN-P - May 2006

Fault State Word

Word 3, the fault state word, selects the hold last

state or user-defined safe state condition for each

individual output on a system transition from Run

to Fault.

Fault Value Word

(1)

The fault value word, word 4, is used to program

the fault state value (0 = Off, 1 = On). Each

output is individually configurable for on or off.

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 in a change to the Fault

mode.

Module Default Condition

(1)

The modules default condition is all zeros.

(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.

Programming Conditions

Word or Bit Affected Condition Applied

Word 0, Bit 0 Program-to-fault Enable Program Value

Word 1 Program State User-defined Safe State

Word 2 Program Value Off

Word 3 Fault State User-defined Safe State

Word 4 Fault Value Off

Condition Bit Setting

User-defined Safe State 0

Hold Last State 1

Value Bit Setting

Off 0

On 1

Value Applied Bit Setting

Program 0

Fault 1

1 2 ... 11 12 13 14 15 16 17 18 19 20

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Rockwell-automation 1769-OG16 Compact TTL Output Module Manual de usuario Pagina 16