ProSoft Technology MVI56-DFCM - Manual (Page 84)

Reference MVI56-DFCM ♦ ControlLogix Platform
User Manual DF1 Half/Full Duplex Master/Slave Serial Communication Module
Page 84 of 106 ProSoft Technology, Inc.
September 24, 2014
Master Command List Data Blocks (6000 to 6004 and 6100 to 6104)
Each port on the module can be configured as a DF1 Master device containing
its own list of one hundred commands. The commands are sent from the
processor using Write Block ID’s 6000 to 6004 for DF1 Port 1 and 6100 to 6104
for DF1 Port 2. The module will sequentially request each block from the
processor. Ladder logic handles the data transfers. The structure of each block is
shown below:
Offset Description Length
0 6000 to 6004 and 6100 to 6104 1
1 to 12 Command Definition 12
13 to 24 Command Definition 12
25 to 36 Command Definition 12
37 to 48 Command Definition 12
49 to 60 Command Definition 12
61 to 72 Command Definition 12
73 to 84 Command Definition 12
85 to 96 Command Definition 12
97 to 108 Command Definition 12
109 to 120 Command Definition 12
121 to 132 Command Definition 12
133 to 144 Command Definition 12
145 to 156 Command Definition 12
157 to 68 Command Definition 12
169 to 180 Command Definition 12
181 to 192 Command Definition 12
193 to 204 Command Definition 12
205 to 216 Command Definition 12
217 to 228 Command Definition 12
229 to 240 Command Definition 12
241 to 247 Spare 7
5.2.5 Event Command Blocks (1000 or 2000)
Event Command Blocks send DF1 commands directly from the ladder logic to
one of the Master ports. The Event Command Write Block format is:
Offset Description Length
0 1000 (Send from Port 1) or 2000 (Send from Port 2) 1
1 Internal DB Address 1
2 Point Count 1
3 Swap Code 1
4 Node Address 1
5 Function Code 1
6 Parameter #1 1