Chapter 7. Programming SRTP Channel Commands
GFK-2224Q
January 2017
119
(Word 17) Remote PLC - Number of Memory Units:
Word 17 specifies the amount of data to be transferred.
The value entered is the number of memory units to be transferred, where the size of a memory unit is a bit,
byte, or word as specified in Word 15. For example, if Word 15=16 and Word 17=4, then 4 bytes (32 bits) of %I
memory will be transferred. A maximum of 8192bits, 1024 bytes, or 512 words of data can be specified.
(Word 18) Remote PLC - Network Address Type:
Word 18 specifies the format of the remote PLC address.
Word 18 must contain the value 1. This indicates a dotted-decimal IP address expressed using a separate
register for each decimal digit.
(Word 19) Remote PLC - Network Address Length:
Word 19 specifies the length in words of the remote PLC IP
address. 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. See
Note below.
(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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