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Rockwell Automation AutoMax ControlNet Communication Interface Module User Manual

Page 49

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AutoMax ControlNet Module Page

49

Publication number DSMBCN-UM001B-EN-P February 2003

module to be read from

20 LOCAL DST%

\! The address of the destination node &

on the local ControlNet network

21 LOCAL STS%

\! The location where the status &

resulting from the operation is stored

22 LOCAL SZE%

\! The number of registers to be &

transferred

23 LOCAL CMD%

\! The PCCC command sent by the module

30 DST% = 3

31 STS% = 0

32 SZE% = 100

33 CMD% = 6

40 IF NOT GATEWAY_CMD_OK@(STS%, CMD%, DST%, "N7:0", &

VARPTR!(B3BASE%), SZE%) THEN 20000

\! process errors &

at line 20000

Example 4: Command 7, Typed Write

In the example below, the module is writing 100 words from the local N7
file to the file address N10:10 in the PLC at node address 7. The variable
N7BASE% is defined in the rack configuration.

10 COMMON N7BASE%

\! Represents the physical address of &

the starting register on the &

module to be written to

20 LOCAL DST%

\! The address of the destination node &

on the local network

21 LOCAL STS%

\! The location where the status &

resulting from the operation is stored

22 LOCAL SZE%

\! The number of registers to be &

transferred

23 LOCAL CMD%

\! The PCCC command sent by the module

30 DST% = 7

31 STS% = 0

32 SZE% = 100

33 CMD% = 7

40 IF NOT GATEWAY_CMD_OK@(STS%, CMD%, DST%, "N10:10",&

VARPTR!(N7BASE%), SZE%) THEN 20000 \!process errors &

at line 20000

Example 5: Command 5, Read-Modify-Write

In the example below, the module writes to three addresses in a PLC,
N7:0, N7:2, and N7:4. The AND/OR mask pairs are stored in three
consecutive pairs of registers starting at B3BASE%. The variable
B3BASE% is defined in the rack configuration.

10 COMMON B3BASE% \! Represents the physical address of &

the starting register on the &