Rockwell Automation 1792D-4BVT4D ArmorBlock MaXum 4 Input/4 Output Module Series B - Manual (Page 8)

8 ArmorBlock MaXum 4 Input / 4 Output Module Series B
Publication 1792D-IN012B-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 polled, change-of-state, or cyclic connection.
The module consumes and produces I/O 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. The 4 input / 4 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 I/O module is
alive and ready to communicate. Consumption occurs when data
changes and the master produces new output data to the I/O module.
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 I3 I2 I1 I0
Produces 1 RSVD OPWR RSVD RSVD OFLT3 OFLT2 OFLT1 OFLT0
Consumes 0 RSVD RSVD RSVD RSVD O3 O2 O1 O0
Where: OW = Off Wire RSVD= Reserved I = Input O = Output OPWR= Output Power
Auxiliary Power) OFLT = Output fault ISC=Input Short Circuit in Sensor Source
Voltage