Rockwell Automation 1792D-8BT8LP ArmorBlock LP2 8 Sinking Input/8 Output Modul - Manual (Page 6)

6 ArmorBlock LP2 8 Sinking Input/ 8 Output Module
Publication 1792D-5.42 - July 1999
Output Power and DeviceNet Cable
Refer to the DeviceNet Cable System Planning and Installation Manual,
publication DN-6.7.2, for more information on output power and
DeviceNet cables for your application.
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 8 input/8 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 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 I7 I6 I5 I4 I3 I2 I1 I0
Produces 1 ISC OPWR RSVD RSVD RSVD RSVD RSVD RSVD
Consumes 0 O7 O6 O5 O4 O3 02 01 00
Where: I = Input, ISC = Input Short Circuit, OPWR = Output Power (Auxiliary Power),
RSVD = Reserved, O = Output,