ProSoft Technology MVI56-BSAPS - Manual (Page 62)

MVI56-BSAPS ♦ ControlLogix Platform Reference
Bristol Babcock Serial Slave Module
Page 62 of 83 ProSoft Technology, Inc.
September 22, 2008
Write Block
These blocks of data transfer information from the ControlLogix processor to the
module. The structure of the output image used to transfer this data is shown in
the following table.
Offset Description Length
0 Write Block ID 1
1 to 200 Write Data 200
201 to 247 Spare 47
The Write Block ID is an index value used to determine the location in the
module's database where the data will be placed. Each transfer can move up to
200 words (block offsets 1 to 200) of data.
Warm Boot
This block is sent from the ControlLogix processor to the module (output image)
when the module is required to perform a warm-boot (software reset) operation.
This block is commonly sent to the module any time configuration data
modifications are made in the controller tags data area. This will force the module
to read the new configuration information and to restart. The structure of the
control block is shown in the following table.
Offset Description Length
0 9998 1
1 to 247 Spare 247
Cold Boot
This block is sent from the ControlLogix processor to the module (output image)
when the module is required to perform the cold boot (hardware reset) operation.
This block is sent to the module when a hardware problem is detected by the
ladder logic that requires a hardware reset. The structure of the control block is
shown in the following table.
Offset Description Length
0 9999 1
1 to 247 Spare 247
Pass-Through Control Blocks
Pass-Through Time Synchronization
The module will pass blocks with identification codes of 9001 to the processor for
function 88h command time synchronization. Ladder logic must handle the
receipt of this function code to the processor. The structure of the pass-through
control block is shown in the following table.
Block 9001
Offset Description Length
0 0 1
1 9001 1
2 Date 1
3 Month 1