FANUC Robotics America GFK-1541B Manuale Utente

This section describes the programming structures common to all Communications Requests: the
COMMREQ Function Block and the Command Block.

The Communications Request is triggered when the logic program passes power to the
COMMREQ Function Block.

(Enable ) -------------

(Command Block address)

(Rack/Slot Location of

the Ethernet Interface)

(Task value)

-

-

-

- 

 Function Faulted (logic)

- 

OK (Series 90-70 PLCs only)

COMM

REQ

IN

FT

SYSID

TASK

Each of the inputs and outputs are discussed in detail below.  Remember that the Command Block
address points to a location in memory that has been set up as the Command Block.

Enable: 

 Control logic for activating the COMMREQ Function Block.

  The location of the Command Block.  It can be any valid address within a word-oriented area

of memory (%R, %AI, or %AQ for the Series 90-30 Ethernet Interface and the Series 90-30
CPU364) (%R, %AI, %AQ, %P, or %L for the Series 90-70 Ethernet Interface (Type 2)).

  A hexadecimal word value that gives the rack (high byte) and slot (low byte) location of

the Ethernet Interface.  For the Series 90-30 CPU364, this must always be set to 0001 to specify
rack 0, slot 1.  Note that if using GE Fanuc’s VersaPro PLC software, the leading zeros in this
hexadecimal word value are not displayed on-screen; for example, 0004 will appear as 4.

Examples:

0

4

0004H

3

4

0304H

2

9

0209H

4

2

0402H

The Series 90-70 Ethernet Interface (Type 2) is supported only in the main PLC
rack (rack number 0).

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