Rockwell Automation 1792D-2BV0D ArmorBlock MaXum 2 Input Module Series B - Manual (Page 8)

8 ArmorBlock MaXum 2 Input Module Series B
Publication 1792D-IN019B-EN-P - September 2000
Communicate With Your ArmorBlock MaXum I/O
Module
This ArmorBlock module’s I/O is exchanged with the master through
a poll, change-of-state, or cyclic connection.
The module produces input data as follows:
Cyclic - allows configuration of the block as an I/O client. The block
will produce and consume its I/O cyclically at the rate configured.
Polled - a master initiates communication by sending its polled I/O
message to the module. This 2 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 the module is alive and ready
to communicate.
Refer to the table below for the word/bit definitions.
Type of I/O Connections Consumes Produces
Cyclic 0 Byte 1 Bytes
Polled 0 Byte 1 Bytes
Change-of-State 0 Byte 1 Bytes
Bit 07 06 05 04 03 02 01 00
Produces 0 OW-B OW-A ISC-B ISC-A RSVD RSVD I1 I0
Where: OW = Off Wire I = Input RSVD = Reserved ISC = Input Short Circuit in
Sensor Source Voltage
Byte Bit Description
Produces 0 00-01
02-03
04-05
06-07
Input status bits: When the bit is set (1), the input is on. Bit
00 = input 0, bit 01 = input 1.
Reserved
Sensor source voltage, input short circuit (ISC): Fault bits are
set (1) when the sensor source voltage is faulted. Bit 04 =
ISC-A on connector A, bit 05 = ISC-B on connector B.
Off-Wire fault (OW): Bit 06 = OW-A on connector A, bit 07 =
OW-B on connector B.