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4-20 TCP/IP Ethernet Communications User’s Manual – January 1996
GFK-1004B
(Word 15) Local PLC - Number of Memory Units: Word 15 specifies the number of
memory units that are to be transferred. The units associated with the memory may be
bits, bytes, or words depending on the memory type specified in Word 13. For example,
if the memory type is %I, this is the number of bits. If the 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 16) Reserved: Word 16 is reserved and should contain the value zero.
(Word 17) Reserved: Word 17 is reserved and should contain the value zero.
(Word 18) Remote Host - Node Address Type: Word 18 specifies the format of the
remote IP address. Word 18 must contain one (1), the address type indicating a
word-oriented, dotted-decimal IP address of a remote PLC.
(Word 19) Remote Host - Node Address Length: Word 19 specifies the length in words of
the remote IP address. Word 19 must contain four (4).
(Words 20-23) Remote Host - 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.