Rockwell Automation 1792D-4BVOD ArmorBlock MaXum 4 Input Module Series B - Manual (Page 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 07 06 05 04 03 02 01 00
Produces 0 ISC-D ISC-C ISC-B ISC-A I3 I2 I1 I0
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