AMCI NEXUS NX2A4E2, Руководство пользователя

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E
THER
N
ET
/IP E
XPLICIT
M
ESSAGING
EtherNet/IP Protocol
ADVANCED MICRO CONTROLS INC.
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5.3 Add the Message Instructions to your Ladder Logic
The following rungs show how you can alternately read data from and write data to the unit.
Figure T5.1 Message Instruction Example
1) Double click on Setup Screen text inside the Message Instruction. The following window will open.
Note that this is the default window and its appearance will change considerably as you progress
through these steps.
Figure T5.2 Message Instruction Setup Screen
2) Double click in the Channel field, click on the

, select “1 (Integral)”, and press Enter.
3) Double click in the Communication Command field, click on the

, select “CIP Generic” and press
Enter.
4) If the Message Instruction is being used to read data from the NX2A4E2, enter the integer file where
the data will be placed in the Data Table Address (Received) field and press enter.
5) If the Message Instruction is being used to write data to the NX2A4E2, enter the integer file where
the source data will be located in the Data Table Address (Send) field and press Enter.
6) For read messages, enter “42” as the number of bytes needed in the Size In Bytes (Receive) field. For
write messages, enter “20” as the number of bytes needed in the Size In Bytes (Send) fields.
7) Enter a RIX address in the Extended Routing Info field. Please note that each Message Instruction
must have its own RIX address.