Rockwell-automation 1792D-8BT8LP ArmorBlock LP2 8 Sinking Input/8 Outp Manual de usuario descargar pdf (Pagina 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 0706050403020100

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,

1 2 3 4 5 6 7 8 9 10 11 12

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Rockwell-automation 1792D-8BT8LP ArmorBlock LP2 8 Sinking Input/8 Outp Manual de usuario Pagina 6