ProSoft Technology MVI56-LTQ - Manual (Page 64)

Reference MVI56-LTQ ♦ ControlLogix Platform
User Manual Limitorque Valve Actuator Master Communication Module
Page 64 of 98 ProSoft Technology, Inc.
August 30, 2010
Write Block
These blocks of data transfer control information from the ControlLogix processor
to the module. This control information issues commands to valves on the
network. Two blocks are defined in the module for this operation; Block 0 and
Block 1. The structure of the output image used for block 0 is shown below:
Word Description
0 BTW ID 0
1 to 10 Open
11 to 20 Stop
21 to 30 Close
31 to 40 Initiate ESD
41 to 50 Terminate ESD
51 to 60 Reset
61 to 70 Engage Contactor #1
71 to 80 Disengage Contactor #1
81 to 90 Engage Contactor #2
91 to 100 Disengage Contactor #2
101 to 110 Engage Contactor #3
111 to 120
Disengage Contactor #3
121 to 130
Engage Contactor #4
131 to 140
Disengage Contactor #4
141 to 150
Engage Contactor #5
151 to 160
Disengage Contactor #5
161 to 170
Engage Contactor #6
171 to 180
Disengage Contactor #6
181 to 247
Spare
This data set controls the digital command set of the modules. Each 10 words for
the command types represent the 150 valves in the system with the data stored
as a bit-mapped image. For example, in order to perform an open command on
slave 1, word 0-bit 0 is used in the open command array. In order to control the
analog values, block 1 is used. The format of block 1 is shown below:
Word Description
0 BTW ID 1
1 to 10 Analog Write Enable
11 to 160
Analog Values
161 to 247
Spare
The Analog Write Enable words are bit-mapped values with each bit representing
one of the 150 valves in the system. When one of the bits is set, the associated
value in the Analog Values array is passed to the selected valve on the network.