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4-14 TCP/IP Ethernet Communications User’s Manual – January 1996
GFK-1004B
memory type is %R, this is the number of words. A maximum of 16384 bits/2048
bytes/1024 words of data may be specified.
(Word 18) Remote PLC - PLC (Node) Address Type: Word 18 specifies the format of the
remote PLC address. In this release, Word 18 must contain the value one (1), indicating a
dotted-decimal IP address expressed using a separate register for each decimal digit.
(Word 19) Remote PLC - PLC (Node) Address Length: Word 19 specifies the length in
words of the remote PLC IP address. In this release Word 19 must contain four (4).
(Words 20-23) Remote PLC - PLC (Node) 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: Word 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. See Note
below.
Word 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 414D in the first word and 5952 in
the second word.