Rockwell Automation 1792-IB8/B INSTL.INST ARMOR BLOCK 8 INPUT - Manual (Page 10)

ArmorBlock 8 Input Module 10
Publication 1792-5.2 – October 1996
Communicate with Your ArmorBlock Module
This ArmorBlock module acts as a slave in a master/slave environment.
It is both a “polled device” and a “change of state device.”
When configured as a polled device, a master initiates communication
by sending its polled I/O message to the ArmorBlock module. The 8
input module scans the inputs and fault bit producing a response that
reflects their status.
When configured as a “change of state” device, productions occur
when an input changes or an input source voltage fault occurs. If
neither has occurred within the “expected packet rate,” a heartbeat
production occurs. This heartbeat production tells the scanner module
that the ArmorBlock module is alive and ready to communicate.
Bit 07 06 05 04 03 02 01 00
Produces I7 I6 I5 I4 I3 I2 I1 I0
Produces S Reserved
Where: I = Input
S = Sensor source voltage fault
Word Bit Description
Produces
1
00–07 Input bits – bit 00 corresponds to input 0, bit 01 to input 1, and
so on.
0 = input off; 1 = the input is on.
Produces 00–06 Reserved
2
07 Sensor source voltage fault bit – this bit is set (1) when the sensor
source voltage is faulted.