Rockwell Automation 1792D-4BT4LP INSTL INSTR ARMORBLOCK LP2 - Manual (Page 5)

4 Sinking Input / 4 Output Module 5
Publication 1792D-5.26 - January 1999
Communicate With Your ArmorBlock LP2 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, and the status of the Auxiliary power.
Change of state - productions occur when an input changes. If no input
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 1 Byte
Polled 1 Byte 1 Byte
Change of State 1 Byte 1 Byte
Bit 07 06 05 04 03 02 01 00
Produces 0 RSVD OPWR RSVD RSVD I3 I2 I1 I0
Consumes 0 RSVD RSVD RSVD RSVD O3 O2 O1 O0
Where: RSVD= Reserved I = Input O = Output OPWR= Output Power (Auxiliary Power)