Rockwell Automation 1792D-2BVA2D ArmorBlock MaXum 2 Input with Alarm/2 Output Module Series B - Manual (Page 8)

8 ArmorBlock MaXum 2 Input with Alarm/ 2 Output Module Series B
Publication 1792D-IN015B-EN-P - September 2000
Communicate With Your ArmorBlock MaXum Module
This ArmorBlock module’s I/O is exchanged with the master through
a polled, change-of-state, or cyclic connection.
The module consumes and produces I/O data as shown:
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 ArmorBlock module. This 2 input / 2 output module
consumes the message, updates outputs, and produces a response.
The response has input data, input faults, output faults, and the status
of the Auxiliary power.
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 ArmorBlock
MaXum module is alive and ready to communicate. Consumption
occurs when data changes and the master produces new output data
to the I/O block.
Refer to the table below for the word/bit definitions.
Type of I/O Connections Consumes Produces
Cyclic 1 Byte 2 Bytes
Polled 1 Byte 2 Bytes
Change-of-State 1 Byte 2 Bytes
Bit 07 06 05 04 03 02 01 00
Produces 0
OW-B OW-A ISC-B ISC-A A1 A0 I1 I0
Produces 1
RSVD OPWR RSVD RSVD RSVD RSVD OFLT1 OFLT0
Consumes 0
RSVD RSVD RSVD RSVD RSVD RSVD O1 O0
Where: OW = Off Wire ISC-Input Short Circuit in Sensor Source Voltage A=Alarm I = Input RSVD=Reserved
OPWR=Output Power (Auxiliary Power) OFLT=Output Fault O=Output