FANUC Robotics America GFK-1541B User Manual

Page 87

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3-20

TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual

May 2002

GFK-1541B

3

(Word 18) Remote PLC - Network Address Type:

Word 18 specifies the format of the remote

PLC address. Currently, Word 18 must contain the value 1 or 3. A value of 1 indicates a dotted-
decimal IP address expressed using a separate register for each decimal digit. A value of 3
indicates a Network Address name. See Example 2 for information on using address type 3.

(Word 19) Remote PLC - Network Address Length:

Word 19 specifies the length in words of

the remote PLC IP address. When an address type of 1 is specified in Word 18, Word 19 must
contain 4.

(Words 20–23) Remote PLC - IP Address:

Words 20–23 specify the four integers, one integer

per word, of the dotted-decimal IP address of the remote PLC to be accessed.

(Words 24–27) Remote PLC - Program Name:

Words 24–27 specify the case-sensitive, zero-

terminated and padded program name (also called task name, which can be found through the
PROG Station Manager command on the server Ethernet Interface) to be used with access to
remote %P or %L memory. These words are required only for access to such memory and will be
ignored if the Memory Type field is not %P or %L.

(Words 28–31) Remote PLC - Program Block Name:

Words 28–31 specify the case- sensitive,

zero-terminated and padded program block name (which can be found in the program block
declaration in the server ladder program) to be used with access to remote %L memory. These
words are required only for access to such memory and will be ignored if the Memory Type field
is not %P or %L.

Note

The Program Name (Words 24–27) and Program Block Name (Words
28–31) must have each pair of ASCII characters reversed within the PLC
memory. For example, the name “MARY” (“M” = 4DH, “A” = 41H,
“R” = 52H, “Y” = 59H) would have 414DH in the first word and 5952H in the
second word.

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