Rockwell-automation 1792D-4BVOD ArmorBlock MaXum 4 Input Module Series Instrukcja Użytkownika Pobierz pdf (Strona 8)

8 ArmorBlock MaXum 4 Input Module Series B

Publication 1792D-IN017B-EN-P - September 2000

Polled - a master initiates communication by sending its polled I/O

message to the module. The 4 input module scans the inputs and

fault bits producing a response that reflects their status.

Change-of-state - productions occur when an input changes or a

fault condition occurs. If no input or fault condition change occurs

within the expected packet rate, a heartbeat production occurs. This

heartbeat production tells the scanner module that the module is alive

and ready to communicate.

Refer to the table below for the word/bit definitions.

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Bit 0706050403020100

Produces 0ISC-DISC-CISC-BISC-AI3I2I1I0

Produces 1 RSVD RSVD RSVD RSVD OW-D OW-C OW-B OW-A

Where: OW = Off Wire I = Input ISC = Input Short Circuit in Sensor Source

Voltage RSVD = Reserved

Byte Bit Description

Produces 0 00-03

04-07

Input status bits: When the bit is set (1), the input is on. Bit 00

= input 0, bit 01= input 1, bit 02 = input 2, bit 03 = input 3.

Sensor source voltage, input short circuit (ISC): Fault bits are

set (1) when the sensor source voltage is faulted. Bit 00 =

ISC-A on connector A, bit 01 = ISC-B on connector B, bit 02 =

ISC-C on connector C, bit 03 = ISC-D on connector D.

Produces 1 00-03

04-07

Off-Wire fault (OW): Bit 00 = OW-A on connector A, bit 01 =

OW-B on connector B, bit 02 = OW-C on connector C, bit 03 =

OW-D on connector D.

Reserved

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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Rockwell-automation 1792D-4BVOD ArmorBlock MaXum 4 Input Module Series Instrukcja Użytkownika Strona 8